horn

roh
[hɔːn] (zool.) "The bull lowered its horns and charged." (Býk sklonil své rohy a zaútočil.)

klakson
[hɔːn] (motor.) též "a car horn"; "to honk/sound the car horn" (zatroubit klaksonem auta)
"an electric horn at the center hub of the steering wheel" (elektrický klakson ve středu volantu)