animalculum vs being

animalculum and being both are nouns.

Word	Noun	Adjective	Verb	Adverb
animalculum	Yes	No	No	No
being	Yes	No	No	No

As nouns, being is a hypernym of animalculum; that is, being is a word with a broader meaning than animalculum:

animalculum: microscopic organism such as an amoeba or paramecium
being: a living thing that has (or can develop) the ability to act or function independently

Other hypernyms of animalculum include organism.

animalculum (noun)	being (noun)
microscopic organism such as an amoeba or paramecium	a living thing that has (or can develop) the ability to act or function independently
	the state or fact of existing