I shudder to think of what their courtship might be like.
Sorry, Shakespeare did not use that word.
Shakespeare used the word "pumpion" in his play "Henry IV, Part 2." Specifically, it appears in Act 5, Scene 1, where the character Pistol refers to it in a comedic context. The term is an old word for pumpkin, reflecting the playful and colloquial language present in Shakespeare's works.
Shakespeare does not use the word townsfolk.
Shakespeare did not use the word "indecent" although he did use "decent". The word "lewd" might be the word he would choose to express this idea.
He has the characters in the play say them. That is how you use words in a play.
Shakespeare wrote in English. "The" means exactly the same when he used it as it does when you use it.
Shakespeare used more than one myth for more than one play.
What an odd question. Japan is not mentioned anywhere in Shakespeare. The word assassin is of Arabic provenance (it derives from hashish) although Shakespeare was the first to use the word "assassination" in English. There are assassins in Shakespeare's plays, and they might be staged in such a way as to be Japanese (as Ken Branagh did in his film As You Like It), but there is no reason for them to be Japanese, unless that is where you are putting on the play
The play Macbeth is written entirely in English.
Shakespeare is credited with the first use of the word "Arch-villain" in his play Measure For Measure, but he did not invent "cheap". The noun sense of "cheap" (a cheap was a market or a bargain) goes back to Old English. The adjective form was just coming into use in the Elizabethan era: Shakespeare is credited with the first use of the word in some senses, but other similar uses were first recorded by other people including the playwright Thomas Dekker, some of them when Shakespeare was a schoolboy in Stratford. Shakespeare can hardly be credited with coining the word "cheap"
Courtship is the process of building a romantic relationship. An example of courtship used in a sentence is: I was there for their courtship, which seemed so perfect, so I was distraught to hear that their relationship fell apart.