This is the 547th most frequent Japanese word.
訪問
"Visit" or "call."
Here, "訪問" is used to describe the act of visiting someone or some place, commonly expressing a polite visit.
私は昨日、友人の家を訪問しました。
Yesterday, I visited a friend's house.
In this sentence, "訪問" is used in a professional context to indicate a formal visit to another entity, such as a business or partner.
会社の取引先を訪問する予定です。
I plan to visit a business partner's company.
Here, "訪問" is applied to visiting a location, in this case, another country, emphasizing the act of travel and interaction with a new place.