correspondence vs proportionateness

correspondence and proportionateness both are nouns.

Word	Noun	Adjective	Verb	Adverb
correspondence	Yes	No	No	No
proportionateness	Yes	No	No	No

As nouns, correspondence and proportionateness are synonyms defined as:

correspondence and proportionateness: the relation of corresponding in degree or size or amount

Other synonyms of correspondence include commensurateness.

correspondence (noun)	proportionateness (noun)
similarity by virtue of corresponding	the relation of corresponding in degree or size or amount
compatibility of observations
(mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane
communication by the exchange of letters
the relation of corresponding in degree or size or amount