This is the 8891st most frequent Japanese word.
正夫
"正夫" (Masao) is a Japanese male given name meaning "righteous man" or "upright husband."
In this sentence, "正夫" is used as a proper noun representing a person's name.
正夫さんはいつも早く起きます。
Masao always wakes up early.
Here, "正夫" is mentioned as an example of a name, showcasing its function as a linguistic item.
正夫という名前は珍しいですね。
The name 'Masao' is quite rare, isn't it?
This usage identifies "正夫" as the name of the speaker's friend, illustrating a possessive relationship.