- Anam: This is the Irish word for spirit, soul, or life. It is also the name of the Celtic goddess of the soul.
- Anman: This is the Scottish Gaelic word for spirit.
- Ankou: This is the Breton word for spirit. It is also the name of the Celtic god of death.
- Brocht: This is the Scottish Gaelic word for a spirit or ghost.
- Corb: This is the Old Irish word for a raven. Ravens were often seen as symbols of the soul in Celtic mythology.
- Cu Sith: This is the Scottish Gaelic word for a fairy dog. Fairy dogs were often seen as guardians of the underworld in Celtic mythology.
- Duende: This is the Spanish word for a spirit or goblin. It is also used in Galician and Portuguese.
- Gwrach: This is the Welsh word for a witch or hag. Witches were often seen as having magical powers in Celtic mythology.
- Macha: This is the Irish word for a queen or goddess. Macha was the name of several Celtic goddesses, including the goddess of war and sovereignty.
- Sidhe: This is the Irish word for a fairy or elf. Sidhe were often seen as the spirits of the dead in Celtic mythology.