corynebacterium vs eubacteria

corynebacterium and eubacteria both are nouns.

Word	Noun	Adjective	Verb	Adverb
corynebacterium	Yes	No	No	No
eubacteria	Yes	No	No	No

As nouns, eubacteria is a hypernym of corynebacterium; that is, eubacteria is a word with a broader meaning than corynebacterium:

corynebacterium: any species of the genus Corynebacterium
eubacteria: a large group of bacteria having rigid cell walls; motile types have flagella

Other hypernyms of corynebacterium include eubacterium, true bacteria.

corynebacterium (noun)	eubacteria (noun)
any species of the genus Corynebacterium	a large group of bacteria having rigid cell walls; motile types have flagella