peanut vs nestling

peanut and nestling both are nouns.

Word	Noun	Adjective	Verb	Adverb
peanut	Yes	Yes	No	No
nestling	Yes	No	No	No

As nouns, nestling is a hypernym of peanut; that is, nestling is a word with a broader meaning than peanut:

Other hypernyms of peanut include child, fry, kid, minor, nipper, shaver, small fry, tiddler, tike, tyke, youngster.

peanut (noun)	nestling (noun)
pod of the peanut vine containing usually 2 nuts or seeds; `groundnut' and `monkey nut' are British terms	young bird not yet fledged
a young child who is small for his age	a young person of either sex
widely cultivated American plant cultivated in tropical and warm regions; showy yellow flowers on stalks that bend over to the soil so that seed pods ripen underground
underground pod of the peanut vine

peanut (adjective)	nestling (adjective)
of little importance or influence or power; of minor status