foreleg vs forelimb

foreleg and forelimb both are nouns.

Word	Noun	Adjective	Verb	Adverb
foreleg	Yes	No	No	No
forelimb	Yes	No	No	No

As nouns, forelimb is a hypernym of foreleg; that is, forelimb is a word with a broader meaning than foreleg:

foreleg: the forelimb of a quadruped
forelimb: the front limb (or the homologous structure in other animals, such as a flipper or wing)

foreleg (noun)	forelimb (noun)
the forelimb of a quadruped	the front limb (or the homologous structure in other animals, such as a flipper or wing)