an informal term for a friend

someone who is considered a companion or partner

मित्र

English Usage: He's my sangi from college.

Hindi Usage: वह मेरे कॉलेज का संगी है।

a term of endearment for a close one

प्रिय

English Usage: He called her his sangi because of their close bond.

Hindi Usage: उसने उसे अपना संगी कहा क्योंकि उनकी नज़दीकी थी।