Clostridium botulinum vs botulinus

Clostridium botulinum and botulinus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Clostridium botulinum	Yes	No	No	No
botulinus	Yes	No	No	No

As nouns, Clostridium botulinum and botulinus are synonyms defined as:

Clostridium botulinum and botulinus: anaerobic bacterium producing botulin the toxin that causes botulism

Other synonyms of Clostridium botulinum include botulinum.

Clostridium botulinum (noun)	botulinus (noun)
anaerobic bacterium producing botulin the toxin that causes botulism	anaerobic bacterium producing botulin the toxin that causes botulism