take lying down vs stomach

take lying down is not a noun while stomach is a noun.

Word	Noun	Adjective	Verb	Adverb
take lying down	No	No	Yes	No
stomach	Yes	No	Yes	No

As verbs, stomach is a hypernym of take lying down; that is, stomach is a word with a broader meaning than take lying down:

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

take lying down (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

take lying down (verb)	stomach (verb)
suffer without protest; suffer or endure passively	put up with something or somebody unpleasant
	bear to eat