barbet vs piciform bird

barbet and piciform bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
barbet	Yes	No	No	No
piciform bird	Yes	No	No	No

As nouns, piciform bird is a hypernym of barbet; that is, piciform bird is a word with a broader meaning than barbet:

barbet: small brightly colored stout-billed tropical bird having short weak wings
piciform bird: any of numerous nonpasserine insectivorous climbing birds usually having strong bills for boring wood

barbet (noun)	piciform bird (noun)
small brightly colored stout-billed tropical bird having short weak wings	any of numerous nonpasserine insectivorous climbing birds usually having strong bills for boring wood