Climax
Part of speech: noun
Definition: The point of greatest intensity or force in an ascending series; a culmination The turning point in a plot or dramatic action, especially one marking a change in the protagonist's affairs. A stage of ecological development where a community of organisms, is stable and capable of perpetuating itself. An orgasm.
Part of speech: verb
Definition: To reach or bring to a climax
Example sentence: Plots may be simple or complex, but suspense, and climactic progress from one incident to another, are essential. Every incident in a fictional work should have some bearing on the climax or denouement, and any denouement which is not the inevitable result of the preceding incidents is awkward and unliterary.
Culmination
Part of speech: noun
Definition: The attainment of the highest point of altitude reached by a heavenly body; passage across the meridian; transit.Attainment or arrival at the highest pitch of glory, power, etc.
Example sentence: I was doing this really wacky sketch comedy but at the same time writing these dark, cerebral plays about characters coming to grips with their loneliness and heartbreak. My dream job has always been a way to combine the two. I would say 'BoJack Horseman' is the culmination of all of that.