sit out vs stomach

sit out is not a noun while stomach is a noun.

Word	Noun	Adjective	Verb	Adverb
sit out	No	No	Yes	No
stomach	Yes	No	Yes	No

As verbs, stomach is a hypernym of sit out; that is, stomach is a word with a broader meaning than sit out:

Other hypernyms of sit out include abide, bear, brook, digest, endure, put up, stand, stick out, suffer, support, tolerate.

sit out (noun)	stomach (noun)
	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

sit out (verb)	stomach (verb)
endure to the end	put up with something or somebody unpleasant
not participate in (an activity, such as a dance or a sports event)	bear to eat