respond vs stool

respond is not a noun while stool is a noun.

Word	Noun	Adjective	Verb	Adverb
respond	No	No	Yes	No
stool	Yes	No	Yes	No

As verbs, stool is a hyponym of respond; that is, stool is a word with a more specific, narrower meaning than respond:

respond (noun)	stool (noun)
	a simple seat without a back or arms
	a plumbing fixture for defecation and urination
	(forestry) the stump of a tree that has been felled or headed for the production of saplings
	solid excretory product evacuated from the bowels

respond (verb)	stool (verb)
show a response or a reaction to something	have a bowel movement
respond favorably or as hoped	grow shoots in the form of stools or tillers
react verbally	react to a decoy, of wildfowl
	lure with a stool, as of wild fowl