onychophoran vs peripatus

onychophoran and peripatus both are nouns.

Word	Noun	Adjective	Verb	Adverb
onychophoran	Yes	No	No	No
peripatus	Yes	No	No	No

As nouns, onychophoran and peripatus are synonyms defined as:

onychophoran and peripatus: any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid worms

Other synonyms of onychophoran include velvet worm.

onychophoran (noun)	peripatus (noun)
any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid worms	any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid worms