Regarding the "electric age", why is electricity this "gas" instead of "device" or "steam"?

Well, it's not "steam" at first: age of steam provides energy through a steam engine, which produces steam. . There are liquid properties in it, but there is no concept of electric energy of water in the electrical age. Although there is hydropower now, electric energy itself cannot have the gaseous state of water. Secondly, it is not this "device": because this electrical appliance is obviously a kind of equipment, a machine, and electricity covers the whole era to provide energy with electricity, so we use the "electric age" and hope to adopt it. But I will agree with a better statement, because I am not an expert or anything, hehe, there must be loopholes.