The End vs climax

The End

• Used traditionally at the end of a story or film. 

• Used to indicate the termination of something. 

• The end of the world, particularly in a religious sense. 

climax

• A rhetorical device in which a series is arranged in ascending order. 

• The final term of a rhetorical climax. 

• The culmination of sexual pleasure, an orgasm. 

• A culmination or acme: the last term in an ascending series 

• The culmination of a narrative's rising action, the turning point. 

• The culmination of ecological development, whereby species are in equilibrium with their environment. 

• To reach or bring to a climax (in any sense).