phylum Nemertina vs phylum

phylum Nemertina and phylum both are nouns.

Word	Noun	Adjective	Verb	Adverb
phylum Nemertina	Yes	No	No	No
phylum	Yes	No	No	No

As nouns, phylum is a hypernym of phylum Nemertina; that is, phylum is a word with a broader meaning than phylum Nemertina:

phylum Nemertina: proboscis worms
phylum: (biology) the major taxonomic group of animals and plants; contains classes

phylum Nemertina (noun)	phylum (noun)
proboscis worms	(biology) the major taxonomic group of animals and plants; contains classes
	(linguistics) a large group of languages that are historically related