protoctist genus vs genus

protoctist genus and genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
protoctist genus	Yes	No	No	No
genus	Yes	No	No	No

As nouns, genus is a hypernym of protoctist genus; that is, genus is a word with a broader meaning than protoctist genus:

protoctist genus (noun)	genus (noun)
any genus of Protoctista	a general kind of something
	(biology) taxonomic group containing one or more species