cliquishness vs clannishness

cliquishness and clannishness both are nouns.

Word	Noun	Adjective	Verb	Adverb
cliquishness	Yes	No	No	No
clannishness	Yes	No	No	No

As nouns, cliquishness and clannishness are synonyms defined as:

cliquishness and clannishness: tendency to associate with only a select group

Other synonyms of cliquishness include exclusiveness.

cliquishness (noun)	clannishness (noun)
tendency to associate with only a select group	tendency to associate with only a select group