scrub fowl vs mound builder

scrub fowl and mound builder both are nouns.

Word	Noun	Adjective	Verb	Adverb
scrub fowl	Yes	No	No	No
mound builder	Yes	No	No	No

As nouns, scrub fowl and mound builder are synonyms defined as:

scrub fowl and mound builder: large-footed short-winged birds of Australasia; build mounds of decaying vegetation to incubate eggs

Other synonyms of scrub fowl include megapode, mound-bird, mound bird.

scrub fowl (noun)	mound builder (noun)
large-footed short-winged birds of Australasia; build mounds of decaying vegetation to incubate eggs	large-footed short-winged birds of Australasia; build mounds of decaying vegetation to incubate eggs