Metazoa vs subkingdom

Metazoa and subkingdom both are nouns.

Word	Noun	Adjective	Verb	Adverb
Metazoa	Yes	No	No	No
subkingdom	Yes	No	No	No

As nouns, subkingdom is a hypernym of Metazoa; that is, subkingdom is a word with a broader meaning than Metazoa:

Metazoa: multicellular animals having cells differentiated into tissues and organs and usually a digestive cavity and nervous system
subkingdom: (biology) a taxonomic group comprising a major division of a kingdom

Metazoa (noun)	subkingdom (noun)
multicellular animals having cells differentiated into tissues and organs and usually a digestive cavity and nervous system	(biology) a taxonomic group comprising a major division of a kingdom