This is the 10th most frequent Czech word.
k
"To" or "towards."
Used as a preposition to indicate direction or movement towards something.
Mířím k domu svého přítele.
I am heading towards my friend's house.
Used as a preposition to express connection or relation between objects.
Klíče patří k zámku.
The keys belong to the lock.
Used as a preposition to indicate purpose or occasion.