an action or judgment that is misguided or wrong

गलती

English Usage: She made a mistake on her test.

Hindi Usage: उसने अपनी परीक्षा में एक गलती की।

to make a wrong judgment about something

गलत समझना

English Usage: I mistake his kindness for weakness.

Hindi Usage: मैं उसकी दयालुता को कमजोरी समझता हूँ।

used to indicate the purpose of an object

के लिए

English Usage: This gift is for you.

Hindi Usage: यह उपहार आपके लिए है।