botulinum vs eubacterium

botulinum and eubacterium both are nouns.

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

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

botulinum: 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 botulinum include eubacteria, true bacteria.

botulinum (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