proboscis worm vs ribbon worm

proboscis worm and ribbon worm both are nouns.

Word	Noun	Adjective	Verb	Adverb
proboscis worm	Yes	No	No	No
ribbon worm	Yes	No	No	No

As nouns, proboscis worm and ribbon worm are synonyms defined as:

proboscis worm and ribbon worm: soft unsegmented marine worms that have a threadlike proboscis and the ability to stretch and contract

Other synonyms of proboscis worm include nemertean, nemertine.

proboscis worm (noun)	ribbon worm (noun)
soft unsegmented marine worms that have a threadlike proboscis and the ability to stretch and contract	soft unsegmented marine worms that have a threadlike proboscis and the ability to stretch and contract