botulinus vs Clostridium botulinum

botulinus and Clostridium botulinum both are nouns.

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

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

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

Other synonyms of botulinus include botulinum.

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