liberate vs liberator

liberate is not a noun while liberator is a noun.

Word	Noun	Adjective	Verb	Adverb
liberate	No	No	Yes	No
liberator	Yes	No	No	No

liberate (noun)	liberator (noun)
	someone who releases people from captivity or bondage

liberate (verb)	liberator (verb)
release (gas or energy) as a result of a chemical reaction or physical decomposition
grant freedom to
give equal rights to; of women and minorities
grant freedom to; free from confinement