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When metamorphic rock gets eroded and the sediment gets compacted and cements into a rock

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When metamorphic rock heats into magma or lava then cools into a solid

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When Sedimentary rock is in high heat and pressure or goes through a chemical change

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When sedimentary rock heats into magma or lava then cools into a solid

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When Igneous rock is in high heat and pressure or goes through a chemical change

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When igneous rock gets eroded and the sediment gets compacted and cements into a rock

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Sedimentary rocks are created when sediment created by erosion or deposition is compacted  and cemented together.
There are three types of sedimentary rocks, Clastic, Organic, and Chemical.
Sandstone is an example of a sedimentary rock

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Metamorphic rocks are created when existed rock is changed by heat and pressure, or by a chemical change.
There are two types of metamorphic rock, foliated and nonfoliated
Gniess and Marble are all Metamorphic rocks.

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Any rock (igneous, sedimentary, or metamorphic) can become a metamorphic rock. If rocks are buried deep in the Earth at high temperatures and pressures, they form new minerals and textures all without melting. If melting occurs, magma is formed, starting the rock cycle all over again.

Geologists can learn the following about the Earth from the study of metamorphic rocks:

the temperature and pressure conditions (metamorphic environment) in which the rock was formed

the composition of the parent, or original unmetamorphosed, rock

aids in the interpretation of the platetectonic setting in which the metamorphism took place

aids in the reconstruction of the geological history of an area.

The term "metamorphic" means "to change form." Changes in the temperature and pressure conditions cause the minerals in the rock to become unstable so they either reorient themselves into layers (foliation) or recrystallize into larger crystals, all without undergoing melting.

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Any rock (igneous, sedimentary, or metamorphic) can become a metamorphic rock. If rocks are buried deep in the Earth at high temperatures and pressures, they form new minerals and textures all without melting. If melting occurs, magma is formed, starting the rock cycle all over again.

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Igneous rocks are created when magma or lava cools into a rock.
There are two types of Igneous rocks, extrusive and intrusive.
Feldspar, Quartz, and Mica are all igneous rocks.

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The composition of magma is limited to the eight common elements of the earth's crust. These elements combine within a melt to form silicate minerals, the most common minerals of igneous rocks. These silicate minerals include feldspars (plagioclase feldspar, potassium feldspar), quartz, micas (muscovite, biotite), pyroxenes (augite), amphiboles (hornblende), and olivine.