The word **赠送** is a compound formed by combining two characters with similar meanings to create a more specific and emphatic term. The first character, **赠** (zèng), means "to bestow as a gift," and the second, **送** (sòng), means "to give" or "to deliver." Together in this common synonymous pairing, they reinforce and refine the meaning to specifically denote "to give as a present" or "to bestow gratuitously," emphasizing the act of giving something freely without expectation of payment or return.