photographer's model vs poser

photographer's model and poser both are nouns.

Word	Noun	Adjective	Verb	Adverb
photographer's model	Yes	No	No	No
poser	Yes	No	No	No

As nouns, poser is a hypernym of photographer's model; that is, poser is a word with a broader meaning than photographer's model:

Other hypernyms of photographer's model include model.

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