eubacterium vs division Eubacteria

eubacterium and division Eubacteria both are nouns.

Word	Noun	Adjective	Verb	Adverb
eubacterium	Yes	No	No	No
division Eubacteria	Yes	No	No	No

eubacterium (noun)	division Eubacteria (noun)
a large group of bacteria having rigid cell walls; motile types have flagella	one-celled monerans having simple cells with rigid walls and (in motile types) flagella