impress vs impressment

impress and impressment both are nouns.

Word	Noun	Adjective	Verb	Adverb
impress	Yes	No	Yes	No
impressment	Yes	No	No	No

As nouns, impress and impressment are synonyms defined as:

impress and impressment: the act of coercing someone into government service

impress (noun)	impressment (noun)
the act of coercing someone into government service	the act of coercing someone into government service

impress (verb)	impressment (verb)
dye (fabric) before it is spun
produce or try to produce a vivid impression of
mark or stamp with or as if with pressure
take (someone) against his will for compulsory service, especially on board a ship
reproduce by printing
impress positively
have an emotional or cognitive impact upon