This is the 10156th most frequent Japanese word.
金岡
"金岡" (Kanaoka) is a Japanese surname.
Here, '金岡' is used as a proper noun representing the surname in the sentence.
金岡さんは教師です。
Mr./Ms. Kanaoka is a teacher.
In this sentence, '金岡' represents the name of a place, specifically a town.
金岡町には美しい公園があります。
There is a beautiful park in Kanaoka Town.
Here, '金岡' is part of the name of an entity, particularly used in a business name.