pithiness vs conciseness

pithiness and conciseness both are nouns.

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

As nouns, pithiness and conciseness are synonyms defined as:

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

Other synonyms of pithiness include concision, succinctness.

pithiness (noun)	conciseness (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