This is the 756th most frequent Dutch word.
kwart
"Quarter" (one-fourth or 15 minutes).
The word 'kwart' here signifies a time interval of one-fourth of an hour, or 15 minutes.
Ik speel elke dag een kwart op de piano.
I play a quarter (of an hour) each day on the piano.
The word 'kwart' here indicates a one-fourth portion of the whole, in this case, the cake.
Het kwart van de taart was nog over.
A quarter of the cake was still left.
The word 'kwart' here is used in expressing time, specifically 15 minutes past the hour.