botulinum vs Clostridium botulinum

botulinum and Clostridium botulinum both are nouns.

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

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

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

Other synonyms of botulinum include botulinus.

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