The expresion of a sentence simple it implies a structure basic of Subject and predicate but A simple sentence contains only ONE independant clause.

Sentence:

• Kevin eats a hamburger in the Restaurant.

• Marta drive a car fast.

• Luis goes to the park.

A compound sentence contains TWO independent clauses or ideas also is the combination of Two or further sustentetive.

Sentence:

• I went to the restaurant and I ate very much.

• Jimin's would like to play soccer, for he is the best player basquet on the team.

• She went to swim in the sea but she burned like a shrimp.

Adverbial clauses modify the verb in the independent clause, while adjectival clauses modify the noun in the independent clause. Nominal clauses act as a noun in the independent clause.

Sentence:

• Kevin and Lucia were angry, they decided to learn the lesson of not fighting.

• She left in a dress, knowing it was raining.