elf
The French word for 'elf' is 'elfe'. It is used in much the same context as in English, for describing a type of supernatural being in folklore and fantasy literature, often characterized as a small, delicate, elusive figure in human form with pointed ears.
I am an elf.
This sentence uses the word 'elfe' to indicate that the speaker is an elf.
The elf is in the forest.
This sentence uses the word 'l'elfe' to refer to an elf, which is a magical creature from European folklore.
She is a light elf.
This sentence uses the adjective 'une elfe de la lumière' to describe someone who is a member of a group called 'light elves', which are mythical creatures known for their wisdom and knowledge.