vibrion vs true bacteria

vibrion and true bacteria both are nouns.

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

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

vibrion: curved rodlike motile bacterium
true bacteria: a large group of bacteria having rigid cell walls; motile types have flagella

Other hypernyms of vibrion include eubacteria, eubacterium.

vibrion (noun)	true bacteria (noun)
curved rodlike motile bacterium	a large group of bacteria having rigid cell walls; motile types have flagella