Final answer:
Tybalt and Benvolio from 'Romeo and Juliet' are examples of foils, characters who contrast each other to emphasize their respective traits.
Step-by-step explanation:
The characters Tybalt and Benvolio in the play Romeo and Juliet serve as examples of foils. A foil is a character who, by comparison and contrast, emphasizes the traits of another character, typically the protagonist. In literature, a foil may present opposing characteristics to highlight particular qualities of the main character.
For instance, while Benvolio is peace-loving and tries to avoid conflict, Tybalt is aggressive and seeks out fights, enhancing our understanding of each character through their differences.