botulinus vs eubacterium

botulinus and eubacterium both are nouns.

Word	Noun	Adjective	Verb	Adverb
botulinus	Yes	No	No	No
eubacterium	Yes	No	No	No

As nouns, eubacterium is a hypernym of botulinus; that is, eubacterium is a word with a broader meaning than botulinus:

botulinus: anaerobic bacterium producing botulin the toxin that causes botulism
eubacterium: a large group of bacteria having rigid cell walls; motile types have flagella

Other hypernyms of botulinus include eubacteria, true bacteria.

botulinus (noun)	eubacterium (noun)
anaerobic bacterium producing botulin the toxin that causes botulism	a large group of bacteria having rigid cell walls; motile types have flagella