pseudomonad vs eubacterium

pseudomonad and eubacterium both are nouns.

Word	Noun	Adjective	Verb	Adverb
pseudomonad	Yes	No	No	No
eubacterium	Yes	No	No	No

As nouns, eubacterium is a hypernym of pseudomonad; that is, eubacterium is a word with a broader meaning than pseudomonad:

pseudomonad: bacteria usually producing greenish fluorescent water-soluble pigment; some pathogenic for plants and animals
eubacterium: a large group of bacteria having rigid cell walls; motile types have flagella

Other hypernyms of pseudomonad include eubacteria, true bacteria.

pseudomonad (noun)	eubacterium (noun)
bacteria usually producing greenish fluorescent water-soluble pigment; some pathogenic for plants and animals	a large group of bacteria having rigid cell walls; motile types have flagella