Is it correct that every device in network(s) has a routing table?

If a device has two network interfaces which are connected to two different networks, is the device necessarily a gateway (for routing purpose) between the two networks?

I thought a gateway is a device manually designated to be a gateway, but now wonder whether a gateway between two networks is just a device

• with two network interfaces connected to the networks respectively, and

• with a routing table allowing packets to be transmitted from a network to the other.

Thanks.