phylum Chordata vs phylum

phylum Chordata and phylum both are nouns.

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

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

phylum Chordata: comprises true vertebrates and animals having a notochord
phylum: (biology) the major taxonomic group of animals and plants; contains classes

phylum Chordata (noun)	phylum (noun)
comprises true vertebrates and animals having a notochord	(biology) the major taxonomic group of animals and plants; contains classes
	(linguistics) a large group of languages that are historically related