Form is the text type the writer chooses to write in. The form of Romeo and Juliet is a play. Plays are meant to be performed by actors and watched by an audience. This is really important and you must remember that Shakespeare was meant to be performed, to be seen. This will be really useful for your analysis.
The play is also a tragedy. A Shakespearean tragedy is a type of play that normally results in the main protagonistThe chief character in a literary work. deaths in tragic circumstances.