changeling vs simpleton

changeling and simpleton both are nouns.

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

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

Other hypernyms of changeling include simple.

changeling (noun)	simpleton (noun)
a child secretly exchanged for another in infancy	a person lacking intelligence or common sense
a person of subnormal intelligence