frypan vs frying pan

frypan and frying pan both are nouns.

Word	Noun	Adjective	Verb	Adverb
frypan	Yes	No	No	No
frying pan	Yes	No	No	No

As nouns, frypan and frying pan are synonyms defined as:

Other synonyms of frypan include skillet.

frypan (noun)	frying pan (noun)
a pan used for frying foods	a pan used for frying foods