coalition vs coalescence

coalition and coalescence both are nouns.

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

As nouns, coalition and coalescence are synonyms defined as:

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

Other synonyms of coalition include coalescency, concretion, conglutination.

coalition (noun)	coalescence (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