kinsmen
The word "Kinsmen" is in Act II, Scene 2, line 914, when Juliet says, "If any of my kinsmen find thee here." The dictionary says it means male family members, from "kin" (family, from Old English "cynn") and "man," used since 1175. It's about Juliet's relatives who would fight Romeo's family. Knowing this made the scene scarier which shows how risky their love is because of family fights. I didn't see how serious the danger was before, but now I get why it's a big deal.