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The general principle of learning burden (Nation, 1990) is that the more a word represents patterns and knowledge that the learners are already familiar with, the lighter its learning burden. The terms in different fields are a learning burden to me (like educational, scientific or medical fields) because the words in L2 (English) are quite different from what I know from L1 (Chinese). Each time I get to know some words in these fields in L2, they are new and 'unfamiliar' words.

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Yes, I agree that it's vital for us to focus on the word's form, meaning and use. Based on this information, we can get to know how to use the word properly and in a suitable situation.
An aspect of learning a word often neglected in the classroom is the connotation. We know the words like synonyms to expand our vocabularies, but we don't pay attention to their 'useful' situation and the words are pejorative and sometimes may cause mistakes and misunderstandings.

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Learning burden is how much effort you put in when you learn a word (Nation, 2013:p.44), if you can relate the words with what you have learned previously, you have less learning burden, otherwise, you have a heavy learning burden. (Nation, 2013) .

Words I'm not going to use too often, I find it much harder to learn.

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Yes, I agree, for general understanding, to learn a word means you need to know its forms, and what it means and be able to use it in a context. I think the most neglected part is "use", in the classroom, you don't have much time to apply what you learned.

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It is generally considered that when a word needs more effort to learn, it is then defined as a learning burden. (Nation, 1990)

Learning burdens for me consist of words related to scientific articles or technical terminology in fields other than education, literature and sometimes English slang language as well.

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Yes, I agree. In the classroom back in my country, the focus is more on form and meaning and less on use; not for lack of its role but rather lack of time. Students do have the chance to put it in use and practice but just not enough to keep them from memorizing.

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The learning burden of a word is the amount of effort required to learn it. Learning burden affects learning. These words-- “pronunciation/ pronounce”. I always made some mistakes in spelling it, especially the “nun/ noun”. Because these words are too abstract and difficult to remember.

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The learning burden of a word is the amount of effort required to learn it. Learning burden affects learning. These words-- “pronunciation/ pronounce”. I always made some mistakes in spelling it, especially the “nun/ noun”. Because these words are too abstract and difficult to remember.

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Yes, I do agree.
From my perspective, the use of words is often neglected in class. In China, teachers are more likely to focus on teaching students the meaning and form of words. Due to the strict College Entrance Examination system, students have to give priority to learning the meaning and form of words, because it is a must in the exam.

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"Learning burden of a word is the amount of effort required to learn it. The more a word represents patterns and knowledge that the learners are already familiar with, the lighter its learning burden. These patterns and knowledge can come from the first language, knowledge of other languages, or previous knowledge of the second language." (Nation & Hunston, 2013, PP. 44-45)

It's hard for me to remember particular words that have been a heavier burden than others but when it comes to "knowing a word or words", I can say finding the correct collocations and using an appropriate and consistent register have always been challenging. In the case of collocations, the reason is that as a learner, learning the "meaning" of a word always had priority over its use. As far as register is concerned, it's to do with the way & context in which I was taught English: reading & writing-focused, for academic purposes and entirely in an EFL context with virtually no contact with authentic materials (including speakers) and no use for it outside the classroom. That's why, in almost all of the rare occasions where I had the chance to chat to native speakers of English in an informal setting, they always told me the same thing: "Your English is very good but you speak like a book."

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We sometimes neglect the collocation usage of a certain word while learning. Teachers tend to teach the form and meaning first, but focus less on how the word is used in context and how it cooperates with other words. As a result, some mistakes of wrong collocations.
Besides, students often have no idea on the formality of certain words. They may make mistakes of using big words in casual chit chat and idioms in essays. Students can't understand how words fits in the context.

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Learning burden refers to the amount of effort a learner need to learn a word. (cited in Nation, 2013) Personally speaking, some fixed collocations and lexical chunks were really challenging for me to remember when I first noticed these. In Chinese, one can easily deduce the meaning of a phrase by its each character in the phrase; however, in English, the meaning of a phrase is not simply the meaning of the words combined. This took me a lot of effort to memorize these.

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I totally agree with Nation who provides us with a comprehensive understanding about what should 'knowing a word' is likely to be. Probably, even language teachers don't notice teaching a word can be more than just teaching its meaning, spelling and pronunciation. Even students themselves learn words  by repeating its spelling again and again rather than memorize them in a context or use them in a context.

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The learning burden of a word is the amount of effort required to learn it.(Nation, 2013:p.44)

Some of the field's proper nouns are learning burden for me, such as Quantum theory,  Pythagorean theorem and so on.
Because in L1(Chinese) I seldom use these kinds of words in daily life, I lack of basic knowledge about these words. And they are also new and unfamiliar in L2(English)

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I agree with Nation. The word form is a symbolic sign symbolising or stands for a concept(or a meaning) and it offers a way for learners to visuallv remembered the word.Besides.lots of words have both literameaning and figurative meaning. so it is essential for us to focus on the meaning of a word to grasp it.Furthermore, it is not enough to merely understand a word at a basic level. In a particular context. we may encounter some confusion when using a familiar word which has a particular meaning.Therefore, the correct use of a word in particular contexts should be paid attention to as well.

From my point of view, the proper use of a word is often neglected in the classroom. One of the main reasons for this is that language exposure in the classroom is inadequate and the expectation of learning a L2 is limited, so students are only asked to get a basic understanding of a word or just learn about several meanings which seem important to meet examination requirements. Thus, the various uses of a word in particular contexts are neglected.

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Nation defines the learning burden of a word as the amount of effort needed to learn it.The term demonstrates the importance of holding attention to systematic patterns and analogies within the second language and making connections between L2 and L1.

For me, some linguistic terms such as onomasiology and semasiology have been a particular learning burden not only because they are too professional and rare used in daily life but also these terms were not taught in depth during my ndergraduate period as a student majoring in English translation and thus Ilack part of relevant knowledge of these terms. In addition, these terms have different translation versions in Chinese academic articles, which may also hinder my understanding of them.