phylum Arthropoda vs phylum

phylum Arthropoda and phylum both are nouns.

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

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

phylum Arthropoda: jointed-foot invertebrates: arachnids, crustaceans, insects, millipedes, centipedes
phylum: (biology) the major taxonomic group of animals and plants; contains classes

phylum Arthropoda (noun)	phylum (noun)
jointed-foot invertebrates: arachnids, crustaceans, insects, millipedes, centipedes	(biology) the major taxonomic group of animals and plants; contains classes
	(linguistics) a large group of languages that are historically related