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: When you win a Grand Prix, it's the culmination of everything coming together. Not just trackside, but behind the scenes.
Climax
Part of speech: noun
Definition: The point of greatest intensity or force in an ascending series; a culminationThe 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: There are, I think, four distinct types of weird story: one expressing a mood or feeling, another expressing a pictorial conception, a third expressing a general situation, condition, legend or intellectual conception, and a fourth explaining a definite tableau or specific dramatic situation or climax.