Question: is the denouement the same as the resolution

Answer: Yes, Renaissance dramatists revived the use of the 8-act structure . In 1863, around the time that playwrights like Henrik Ibsen were abandoning the 5-act structure and experimenting with 3 and 4-act plays, the German playwright and novelist Gustav Freytag wrote Die Technik des Dramas, a definitive study of the 5-act dramatic structure, in which he laid out what has come to be known as Freytag's pyramid. Under Freytag's pyramid, the plot of a story consists of five parts: exposition, rising action, climax, falling action, and dénouement/resolution/revelation/catastrophe.