lameness vs limping

lameness and limping both are nouns.

Word	Noun	Adjective	Verb	Adverb
lameness	Yes	No	No	No
limping	Yes	No	No	No

As nouns, lameness and limping are synonyms defined as:

lameness and limping: disability of walking due to crippling of the legs or feet

Other synonyms of lameness include claudication, gameness, gimp, gimpiness.

lameness (noun)	limping (noun)
disability of walking due to crippling of the legs or feet	disability of walking due to crippling of the legs or feet
an imperfection or defectiveness