This is the 7720th most frequent Turkish word.
kap
Container.
In this sentence, 'kap' is implied in 'kapı', which means 'door'; showing its use within a compound term.
Evde kapıdan içeri girerken dikkat et.
Be careful when entering through the door at home.
The word 'kap' is used to mean 'container'.
Mutfakta çorba koymak için bir kap buldum.
In the kitchen, I found a container to put the soup in.
Here, 'kap' refers to a 'lid' as a covering for something.