component vs residue

component and residue both are nouns.

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

As nouns, residue is a hyponym of component; that is, residue is a word with a more specific, narrower meaning than component:

component (noun)	residue (noun)
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	something left after other parts have been taken away
an abstract part of something	matter that remains after something has been removed
something determined in relation to something that includes it