poser vs problem

poser and problem both are nouns.

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

As nouns, problem is a hypernym of poser; that is, problem is a word with a broader meaning than poser:

poser (noun)	problem (noun)
a particularly difficult or baffling question or problem	a source of difficulty
a person who poses for a photographer or painter or sculptor	a question raised for consideration or solution
a person who habitually pretends to be something he is not	a state of difficulty that needs to be resolved