The Greek equivalent of Thoth, god of medicine, writing and speech. The Celts had Herne, the god of forests, the animals and wisdom. The word also means Serpent.
A “herme” is a phallic stone like an obelisk. So Hermes also meant man, probably “the Serpent Man.” (See the first card of the Tarot’s Major Arcana, The Magician.)
The Romans renamed Hermes, as Mercury. From this we get the modern word firm. And interestingly this is the name given to corporate structures and edifices, to imply their masculinity, the fact that they are commercial, and therefore under the auspices of Mercury, the god of commerce.