spirochete vs spirochaete

spirochete and spirochaete both are nouns.

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

As nouns, spirochete and spirochaete are synonyms defined as:

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

spirochete (noun)	spirochaete (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