dumbbell vs simpleton

dumbbell and simpleton both are nouns.

Word	Noun	Adjective	Verb	Adverb
dumbbell	Yes	No	No	No
simpleton	Yes	No	No	No

As nouns, simpleton is a hypernym of dumbbell; that is, simpleton is a word with a broader meaning than dumbbell:

Other hypernyms of dumbbell include simple.

dumbbell (noun)	simpleton (noun)
an exercising weight; two spheres connected by a short bar that serves as a handle	a person lacking intelligence or common sense
an ignorant or foolish person