appetite vs stomach

appetite and stomach both are nouns.

Word	Noun	Adjective	Verb	Adverb
appetite	Yes	No	No	No
stomach	Yes	No	Yes	No

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

Other hyponyms of appetite include sweet tooth.

appetite (noun)	stomach (noun)
a feeling of craving something	an enlarged and muscular saclike organ of the alimentary canal; the principal organ of digestion
	the region of the body of a vertebrate between the thorax and the pelvis
	an appetite for food
	an inclination or liking for things involving conflict or difficulty or unpleasantness

appetite (verb)	stomach (verb)
	put up with something or somebody unpleasant
	bear to eat