pan vs warming pan

pan and warming pan both are nouns.

Word	Noun	Adjective	Verb	Adverb
pan	Yes	No	Yes	No
warming pan	Yes	No	No	No

As nouns, warming pan is a hyponym of pan; that is, warming pan is a word with a more specific, narrower meaning than pan:

Other hyponyms of pan include bain-marie, dishpan, drip pan, pannikin.

pan (noun)	warming pan (noun)
shallow container made of metal	a long-handled covered pan holding live coals to warm a bed
cooking utensil consisting of a wide metal vessel

pan (verb)	warming pan (verb)
express a totally negative opinion of
wash dirt in a pan to separate out the precious minerals
make a sweeping movement