yes
Romeo and Juliet
Romeo and Juliet!!!
no
Juliet, Romeo, Tybalt, Nurse, Benvolio Or . . . Juliet, Romeo, Friar Lawrence, Nurse, Capulet Or . . . Juliet, Romeo, Friar Lawrence, Capulet, Tybalt Or . . . Juliet, Romeo, Capulet, Mercutio, Tybalt Or basically Romeo and Juliet and any three of Nurse, Friar, Capulet, Mercutio, or Tybalt.
In Shakespeare's play, the Sunday night is when Capulet throws a party which Romeo and his buddies crash. It is the party where Romeo and Juliet meet. It's the same in any of the several films which are closely based on the play.
Juliet.
The Romeo and Juliet you have heard about isn't any category of poem at all. It's a play.
Lady Capulet does not want to kill Romeo. She is Juliet's mother and does not harbor any intent to harm Romeo in the story of Romeo and Juliet.
It is difficult to say. Most people have heard of Hamlet and Romeo and Juliet. They know the plays they studied in school. Many of them will not have any contact with Shakespeare after.
Any character who is not Juliet.
There is not a character called "Gretchen" in Romeo and Juliet but there is a possibility that there is a character with a similar name.
A red rose is used by Scholastic Books for their cover image in their edition of Romeo and Juliet. The only actual rose which appears in the play is the conceptual one in Juliet's line "That which we call a rose by any other word would smell as sweet." For the purposes of her argument, as long as it is not a scentless rose, any rose would do.