basis vs component part

basis and component part both are nouns.

Word	Noun	Adjective	Verb	Adverb
basis	Yes	No	No	No
component part	Yes	No	No	No

As nouns, component part is a hypernym of basis; that is, component part is a word with a broader meaning than basis:

basis: the most important or necessary part of something
component part: something determined in relation to something that includes it

Other hypernyms of basis include component, constituent, part, portion.

basis (noun)	component part (noun)
the fundamental assumptions from which something is begun or developed or calculated or explained	something determined in relation to something that includes it
a relation that provides the foundation for something
the most important or necessary part of something