subpart vs component

subpart and component both are nouns.

Word	Noun	Adjective	Verb	Adverb
subpart	Yes	No	No	No
component	Yes	No	No	No

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

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

subpart (noun)	component (noun)
a part of a part	an artifact that is one of the individual parts of which a composite entity is made up; especially a part that can be separated from or attached to a system
	an abstract part of something
	something determined in relation to something that includes it