botulinum vs eubacteria

botulinum and eubacteria both are nouns.

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

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

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

Other hypernyms of botulinum include eubacterium, true bacteria.

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