stool vs respond

stool is a noun but respond is not a noun.

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

As verbs, respond is a hypernym of stool; that is, respond is a word with a broader meaning than stool:

Other hypernyms of stool include react.

stool (noun)	respond (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

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