Physical love: This type of love is based on physical attraction and desire. It is represented by the way Romeo and Juliet are immediately drawn to each other at the Capulet ball. They are both physically beautiful and they are both attracted to each other's physical appearance.
Romantic love: This type of love is based on emotion and passion. It is represented by the way Romeo and Juliet speak about each other. They use poetic language to express their love for each other and they are both willing to die for each other.
These two contrasting concepts of love are important because they help to drive the plot of the play. The physical love between Romeo and Juliet leads them to get married in secret. The romantic love between them leads them to eventually commit suicide.