bear up vs stomach

bear up is not a noun while stomach is a noun.

Word	Noun	Adjective	Verb	Adverb
bear up	No	No	Yes	No
stomach	Yes	No	Yes	No

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

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

bear up (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

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