This is the 7958th most frequent Japanese word.
多惠子
"多惠子" (Taeko) is a Japanese female given name, meaning "many blessings" or "abundant kindness," depending on the kanji interpretation.
In this sentence, '多惠子' functions as a proper noun referring to a specific person's name, Taeko.
多惠子さんは立派な医師です。
Ms. Taeko is an excellent doctor.
Here, '多惠子' again acts as a proper noun, identifying the person in the role of leader.
新しいプロジェクトのリーダーは多惠子さんです。
The leader of the new project is Ms. Taeko.
In this example, '多惠子' represents a person's name, specifying the speaker's best friend.