convict vs lifer

convict and lifer both are nouns.

Word	Noun	Adjective	Verb	Adverb
convict	Yes	No	Yes	No
lifer	Yes	No	No	No

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

Other hyponyms of convict include trusty.

convict (noun)	lifer (noun)
a person serving a sentence in a jail or prison	a prisoner serving a term of life imprisonment
a person who has been convicted of a criminal offense

convict (verb)	lifer (verb)
find or declare guilty