climax vs consummation

climax and consummation both are nouns.

Word	Noun	Adjective	Verb	Adverb
climax	Yes	No	Yes	No
consummation	Yes	No	No	No

As nouns, consummation is a hypernym of climax; that is, consummation is a word with a broader meaning than climax:

climax (noun)	consummation (noun)
the moment of most intense pleasure in sexual intercourse	the act of bringing to completion or fruition
the decisive moment in a novel or play	the completion of marriage by sexual intercourse
arrangement of clauses in ascending order of forcefulness
the highest point of anything conceived of as growing or developing or unfolding
the most severe stage of a disease

climax (verb)	consummation (verb)
end, especially to reach a final or climactic stage