belly button vs stomach

belly button and stomach both are nouns.

Word	Noun	Adjective	Verb	Adverb
belly button	Yes	No	No	No
stomach	Yes	No	Yes	No

belly button (noun)	stomach (noun)
a scar where the umbilical cord was attached	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

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