This is the 8177th most frequent Japanese word.
岡崎
"岡崎" (Okazaki) is a Japanese place name, often referring to a city in Aichi Prefecture or a surname.
岡崎 is used to refer to the geographic location, the town of Okazaki.
岡崎は美しい町です。
Okazaki is a beautiful town.
岡崎 is used as a surname in this sentence.
彼の苗字は岡崎です。
His last name is Okazaki.
岡崎 is used to specify the location where the castle exists.