subkingdom vs Metazoa

subkingdom and Metazoa both are nouns.

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

As nouns, Metazoa is a hyponym of subkingdom; that is, Metazoa is a word with a more specific, narrower meaning than subkingdom:

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

Other hyponyms of subkingdom include Parazoa, subkingdom Parazoa, subkingdom Metazoa.

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