megapode vs mound-bird

megapode and mound-bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
megapode	Yes	No	No	No
mound-bird	Yes	No	No	No

As nouns, megapode and mound-bird are synonyms defined as:

megapode and mound-bird: large-footed short-winged birds of Australasia; build mounds of decaying vegetation to incubate eggs

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

megapode (noun)	mound-bird (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