antbird vs ant shrike

antbird and ant shrike both are nouns.

Word	Noun	Adjective	Verb	Adverb
antbird	Yes	No	No	No
ant shrike	Yes	No	No	No

As nouns, ant shrike is a hyponym of antbird; that is, ant shrike is a word with a more specific, narrower meaning than antbird:

antbird: any of various dull-colored South American birds that feeding on ants some following army ant swarms
ant shrike: antbirds superficially resembling shrikes

Other hyponyms of antbird include ant thrush, Hylophylax naevioides, spotted antbird.

antbird (noun)	ant shrike (noun)
any of various dull-colored South American birds that feeding on ants some following army ant swarms	antbirds superficially resembling shrikes