This is the 7356th most frequent French word.
one
The French word "one" does not exist; it may be a typo or confusion with "une" (feminine form of "a" or "one").
The word 'on' in French is used as an impersonal pronoun, equivalent to 'one' in English, representing anyone or people in general.
On doit toujours essayer d'apprendre.
One must always try to learn.
The word 'celui' here translates to 'one' in English, specifying an object or choice in comparison to others.
Est-ce que tu veux prendre celui-ci ou celui-là ?
Do you want to take this one or that one?
The word 'une' corresponds to 'one' in English as a numeral, used here to indicate quantity.