The word 捐献 is formed by combining two characters, each contributing a core meaning to create a unified concept. 捐 carries the fundamental idea of "to relinquish" or "to contribute", often something material. 献 adds the dimension of "to offer" or "to present", typically with a sense of respect or dedication, as in a ceremonial offering. When merged, the compound 捐献 synthesizes these actions into a single act where the act of giving up or contributing (捐) is performed as a deliberate, respectful offering (献) for a cause, thus forming the complete meaning of "to donate" or "to contribute charitably".