spirochaete vs true bacteria

spirochaete and true bacteria both are nouns.

Word	Noun	Adjective	Verb	Adverb
spirochaete	Yes	No	No	No
true bacteria	Yes	No	No	No

As nouns, true bacteria is a hypernym of spirochaete; that is, true bacteria is a word with a broader meaning than spirochaete:

spirochaete: parasitic or free-living bacteria; many pathogenic to humans and other animals
true bacteria: a large group of bacteria having rigid cell walls; motile types have flagella

Other hypernyms of spirochaete include eubacteria, eubacterium.

spirochaete (noun)	true bacteria (noun)
parasitic or free-living bacteria; many pathogenic to humans and other animals	a large group of bacteria having rigid cell walls; motile types have flagella