When the first Complete Shakespeare edition (called the First Folio) was published, it was called "William Shakespeare's Histories, Tragedies and Comedies" and all the plays were put into one of those three categories.
Rings are important in many Shakespeare plays. In Merchant of Venice, Bassanio and Graziano promise their wives never to take off their wedding rings then promptly give them to Antonio's lawyer and...
I dunno, but I like, Romeo and Juliet, A midsummer nights dream n Anthony and Cleopatra, the 3 best know r probably Romeo and Juliet, Macbeth n Hamlet tho xxx