velvet worm vs class Onychophora

velvet worm and class Onychophora both are nouns.

Word	Noun	Adjective	Verb	Adverb
velvet worm	Yes	No	No	No
class Onychophora	Yes	No	No	No

velvet worm (noun)	class Onychophora (noun)
any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid worms	enigmatic small elongated wormlike terrestrial invertebrates of damp dark habitats in warm regions; distinct from the phylum Annelida; resemble slugs with legs and are sometimes described as the missing link between arthropods and annelids