pegleg vs wooden leg

pegleg and wooden leg both are nouns.

Word	Noun	Adjective	Verb	Adverb
pegleg	Yes	No	No	No
wooden leg	Yes	No	No	No

As nouns, pegleg and wooden leg are synonyms defined as:

Other synonyms of pegleg include leg, peg.

pegleg (noun)	wooden leg (noun)
a prosthesis that replaces a missing leg	a prosthesis that replaces a missing leg