poser vs poseur

poser and poseur both are nouns.

Word	Noun	Adjective	Verb	Adverb
poser	Yes	No	No	No
poseur	Yes	No	No	No

As nouns, poser and poseur are synonyms defined as:

poser and poseur: a person who habitually pretends to be something he is not

poser (noun)	poseur (noun)
a particularly difficult or baffling question or problem	a person who habitually pretends to be something he is not
a person who poses for a photographer or painter or sculptor
a person who habitually pretends to be something he is not