lowan vs scrub fowl

lowan and scrub fowl both are nouns.

Word	Noun	Adjective	Verb	Adverb
lowan	Yes	No	No	No
scrub fowl	Yes	No	No	No

As nouns, scrub fowl is a hypernym of lowan; that is, scrub fowl is a word with a broader meaning than lowan:

lowan: Australian mound bird; incubates eggs naturally in sandy mounds
scrub fowl: large-footed short-winged birds of Australasia; build mounds of decaying vegetation to incubate eggs

Other hypernyms of lowan include megapode, mound-bird, mound bird, mound builder.

lowan (noun)	scrub fowl (noun)
Australian mound bird; incubates eggs naturally in sandy mounds	large-footed short-winged birds of Australasia; build mounds of decaying vegetation to incubate eggs