This is the 4197th most frequent Japanese word.
中谷
"中谷" (Nakaya) is a Japanese surname meaning "central valley" or "middle valley."
Here, '中谷' is used as a proper noun, specifically as a surname to address a person respectfully.
昨日、中谷さんが会社に来ました。
Yesterday, Mr. Nakaya came to the office.
In this sentence, '中谷' is used as a place name, indicating a specific region known for its scenery.
中谷地区は紅葉が美しい。
The Nakaya area has beautiful autumn leaves.
Here, '中谷' is used as part of a title, referring to a professor, presumably known for some achievements.