spirochaete vs spirochete

spirochaete and spirochete both are nouns.

Word	Noun	Adjective	Verb	Adverb
spirochaete	Yes	No	No	No
spirochete	Yes	No	No	No

As nouns, spirochaete and spirochete are synonyms defined as:

spirochaete and spirochete: parasitic or free-living bacteria; many pathogenic to humans and other animals

spirochaete (noun)	spirochete (noun)
parasitic or free-living bacteria; many pathogenic to humans and other animals	parasitic or free-living bacteria; many pathogenic to humans and other animals