The word 到来 is formed by combining two individual characters, each with related meanings, to create a unified concept. The first character, 到, means "to arrive" or "to reach", focusing on the endpoint of a movement. The second, 来, means "to come", emphasizing the action of moving toward a point. By placing them together, the compound reinforces and encompasses the full, holistic idea of an arrival or advent, the entire process or moment of something coming and reaching its destination or state of presence.