quadrumvirate (noun)

1. In the love story, the quadrumvirate consisted of two couples deeply in love with each other.

2. In the realm of magic and mythical creatures, the quadrumvirate united to defeat the evil sorcerer.

3. In the futuristic world, the quadrumvirate were skilled warriors who fought against the AI uprising.

4. The famous novel portrayed a quadrumvirate who embarked on a dangerous adventure together.