This is the 372nd most frequent French word.
chacun
"Each one" or "everyone individually."
The word 'chacun' here is a pronoun used to mean 'each person' in the collective sense.
Chacun doit faire un effort collectif.
Each person must make a collective effort.
In this sentence, 'chacun' refers to every individual in a group receiving something singularly.
On a distribué un cadeau à chacun.
A gift was distributed to each person.
This usage of 'chacun' highlights the individuality and autonomous decisions of multiples.