conciseness vs concision

conciseness and concision both are nouns.

Word	Noun	Adjective	Verb	Adverb
conciseness	Yes	No	No	No
concision	Yes	No	No	No

As nouns, conciseness and concision are synonyms defined as:

conciseness and concision: terseness and economy in writing and speaking achieved by expressing a great deal in just a few words

Other synonyms of conciseness include pithiness, succinctness.

conciseness (noun)	concision (noun)
terseness and economy in writing and speaking achieved by expressing a great deal in just a few words	terseness and economy in writing and speaking achieved by expressing a great deal in just a few words