This is the 2591st most frequent Japanese word.
建部
"建部" (Tatebe) is a Japanese surname.
The word '建部' functions as a proper noun, specifically a surname, in this sentence.
建部さんは私の友人です。
Mr. Tatebe is my friend.
Here, '建部' is utilized as a geographical proper noun, denoting a district or region.
彼の家は建部地区にあります。
His house is in the Tatebe district.
In this context, '建部' refers to the name of a town, indicating a location.