The French word for "soul" is "âme". "L'âme" is used for "the soul". It stems from the Latin word "anima" which also means "soul" and from which the words "animation" and "animal" are also derived.
The French word for "soul" is "âme", the translation of "soul mate" is "âme soeur". We can also say that the word for "spirit" is "esprit" and "soulful" is "plein d'esprit".