skillet vs frying pan

skillet and frying pan both are nouns.

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

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

Other synonyms of skillet include frypan.

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