The act of removing dirt, marks, or impurities from something.

सफाई करना

English Usage: The cleaning of the house takes all weekend.

Hindi Usage: घर की सफाई पूरे सप्ताहांत लेती है।

The process of making something clean.

साफ करना

English Usage: I am cleaning the kitchen right now.

Hindi Usage: मैं अभी रसोई साफ कर रहा हूँ।