stomach vs ab

stomach and ab both are nouns.

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

stomach (noun)	ab (noun)
an enlarged and muscular saclike organ of the alimentary canal; the principal organ of digestion	the muscles of the abdomen
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

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