nemertine vs ribbon worm

nemertine and ribbon worm both are nouns.

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

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

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

Other synonyms of nemertine include nemertean, proboscis worm.

nemertine (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