clostridium vs clostridia

clostridium and clostridia both are nouns.

Word	Noun	Adjective	Verb	Adverb
clostridium	Yes	No	No	No
clostridia	Yes	No	No	No

As nouns, clostridium and clostridia are synonyms defined as:

clostridium and clostridia: spindle-shaped bacterial cell especially one swollen at the center by an endospore

clostridium (noun)	clostridia (noun)
spindle-shaped bacterial cell especially one swollen at the center by an endospore	spindle-shaped bacterial cell especially one swollen at the center by an endospore