First of all (obviously) they have the same overall idea over the story. I guess that would be the plot… in Romeo and Juliet, Romeo and Juliet fall in love in Westside story tony and Maria fall in love. One thing that is alike in that is in Romeo and Juliet they meet at a party and in Westside story they meet at a ball. In Romeo and Juliet, Benvolio gets Romeo to go to the masquerade; in Westside story Riff (Mercutio) gets tony (Romeo) to go to the ball. The link between this is faded. Since in Romeo and Juliet, Benvolio and Romeo were related through family and in Westside story Riff and Tony were related through their gang, Even though Tony was not in the gang at the time. Another comparison is it had similar characters. Such as:
Westside story| Romeo and Juliet|
Anita| Nurse |
Riff | Mercutio |
Friar Laurence| The doc|
I’m not sure if in Romeo and Juliet the nurse had a relationship with anyone but in Westside story Anita was going with Bernardo. In Romeo and Juliet the nurse actually looks after Juliet but In Westside story Anita is Marias best friend. Contrast
The differences are quite obvious… first of all the weapons are different, because in Romeo and Juliet swords and poison were used but in Westside story knives and guns were used. Another difference was that in Romeo and Juliet the nurse was made fun of with inappropriate jokes and in Westside story Anita gets sexually harassed. The biggest difference in the movies is that in Romeo and Juliet, Juliet dies in the end by her own hand. But in Westside story Maria doesn’t die. In Westside story tony is shot by chino as he and Juliet reunited. In Romeo and Juliet Romeo and Juliet both kill themselves after they thought each other were dead. So as you can tell there are a lot of similarities and differences...