coalition vs coalescency

coalition and coalescency both are nouns.

Word	Noun	Adjective	Verb	Adverb
coalition	Yes	No	No	No
coalescency	Yes	No	No	No

As nouns, coalition and coalescency are synonyms defined as:

coalition and coalescency: the union of diverse things into one body or form or group; the growing together of parts

Other synonyms of coalition include coalescence, concretion, conglutination.

coalition (noun)	coalescency (noun)
the union of diverse things into one body or form or group; the growing together of parts	the union of diverse things into one body or form or group; the growing together of parts
an organization of people (or countries) involved in a pact or treaty
the state of being combined into one body