actinomyces vs eubacterium

actinomyces and eubacterium both are nouns.

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

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

actinomyces: soil-inhabiting saprophytes and disease-producing plant and animal parasites
eubacterium: a large group of bacteria having rigid cell walls; motile types have flagella

Other hypernyms of actinomyces include eubacteria, true bacteria.

actinomyces (noun)	eubacterium (noun)
soil-inhabiting saprophytes and disease-producing plant and animal parasites	a large group of bacteria having rigid cell walls; motile types have flagella