enlistee vs newcomer

enlistee and newcomer both are nouns.

Word	Noun	Adjective	Verb	Adverb
enlistee	Yes	No	No	No
newcomer	Yes	No	No	No

As nouns, newcomer is a hypernym of enlistee; that is, newcomer is a word with a broader meaning than enlistee:

Other hypernyms of enlistee include entrant, fledgeling, fledgling, freshman, neophyte, newbie, starter.

enlistee (noun)	newcomer (noun)
any new member or supporter (as in the armed forces)	any new participant in some activity
	a recent arrival