reuse vs employ

reuse is not a noun while employ is a noun.

Word	Noun	Adjective	Verb	Adverb
reuse	No	No	Yes	No
employ	Yes	No	Yes	No

As verbs, employ is a hypernym of reuse; that is, employ is a word with a broader meaning than reuse:

reuse: use again after processing
employ: put into service; make work or employ for a particular purpose or for its inherent or natural purpose

Other hypernyms of reuse include apply, use, utilise, utilize.

reuse (noun)	employ (noun)
	the state of being employed or having a job

reuse (verb)	employ (verb)
use again after processing	put into service; make work or employ for a particular purpose or for its inherent or natural purpose
	engage or hire for work