weakling vs wimp

weakling and wimp both are nouns.

Word	Noun	Adjective	Verb	Adverb
weakling	Yes	No	No	No
wimp	Yes	No	No	No

As nouns, wimp is a hyponym of weakling; that is, wimp is a word with a more specific, narrower meaning than weakling:

Other hyponyms of weakling include namby-pamby, softie, softy, chicken, crybaby.

weakling (noun)	wimp (noun)
a person who is physically weak and ineffectual	a person who lacks confidence, is irresolute and wishy-washy