To be aware of or have knowledge about something.

To recognize someone or something.

किसी व्यक्ति या चीज़ को पहचानना।

English Usage: Do you know her from school?

Hindi Usage: क्या आप उसे स्कूल से पहचानते हैं?

Knowledge or information.

ज्ञान या सूचना।

English Usage: His know of the subject is impressive.

Hindi Usage: विषय का उसका ज्ञान प्रभावशाली है।