To give oneself up to the power or control of someone or something.

आत्मसमर्पण करना

English Usage: The soldiers surrendered after a long battle.

Hindi Usage: सैनिकों ने लंबे युद्ध के बाद आत्मसमर्पण कर दिया।

The act of giving up possession or control over something.

समर्पण

English Usage: His surrender to the enemy was unexpected.

Hindi Usage: दुश्मन के सामने उसका समर्पण अप्रत्याशित था।