piciform bird vs toucan

piciform bird and toucan both are nouns.

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

As nouns, toucan is a hyponym of piciform bird; that is, toucan is a word with a more specific, narrower meaning than piciform bird:

piciform bird: any of numerous nonpasserine insectivorous climbing birds usually having strong bills for boring wood
toucan: brilliantly colored arboreal fruit-eating bird of tropical America having a very large thin-walled beak

Other hyponyms of piciform bird include pecker, peckerwood, woodpecker, barbet, puffbird, honey guide, jacamar.

piciform bird (noun)	toucan (noun)
any of numerous nonpasserine insectivorous climbing birds usually having strong bills for boring wood	brilliantly colored arboreal fruit-eating bird of tropical America having a very large thin-walled beak