Little Joe vs quaternity

Little Joe and quaternity both are nouns.

Word	Noun	Adjective	Verb	Adverb
Little Joe	Yes	No	No	No
quaternity	Yes	No	No	No

As nouns, Little Joe and quaternity are synonyms defined as:

Little Joe and quaternity: the cardinal number that is the sum of three and one

Other synonyms of Little Joe include 4, four, foursome, IV, quadruplet, quartet, quatern, quaternary, quaternion, tetrad.

Little Joe (noun)	quaternity (noun)
the cardinal number that is the sum of three and one	the cardinal number that is the sum of three and one