This is the 7632nd most frequent Russian word.
жанна
"Жанна" is a Russian female given name equivalent to "Jeanne" or "Joan" in English.
Here, 'Жанна' refers to the name of a person, used as the subject of the sentence.
Жанна купила свежие яблоки на рынке.
Zhanna bought fresh apples at the market.
In this case, 'Жанна' is used as a direct address to a person.
Жанна, ты уже завершила свою работу?
Zhanna, have you finished your work yet?
This sentence explains the origin of the name 'Жанна.'