This is the 9802nd most frequent Russian word.
яковлева
"Яковлева" is a Russian surname, the feminine form of "Яковлев," meaning "descendant of Yakov (Jacob)."
The word 'Яковлевой' is used in the dative case to indicate that the action of meeting is directed towards a female individual with the surname Yakovleva.
Мне нужно встретиться с Яковлевой завтра.
I need to meet Yakovleva tomorrow.
Here, 'Яковлева' serves as the subject of the sentence, representing a female individual with the surname Yakovleva who performs the action of working.
Яковлева работает в отделе кадров.
Yakovleva works in the human resources department.
The word 'Яковлевой' is in the instrumental case in this sentence, used to explain the acquaintance with the female individual named Yakovleva.