Bureau
Department, Station, Office
noun, suffix
The kanji and the word are exactly the same. That means they share meanings as well.
The kanji and the vocab are exactly the same, even the reading. This one uses the on'yomi probably because it's often attached to other words (specifying a bureau, for example), so that's why it follows jukugo conventions despite being all alone.
テレビ局
TV station
ラジオ局
radio station
他局
other bureau
この局のニュースをよく見ます。
I often see the news on this station.
ゆうびん局では海外に手紙を出すことが出来ます。
You can mail out letters overseas at the post office.
北米局では、主にアメリカとカナダとの外交をします。
The North American Bureau mainly does diplomacy with the United States and Canada.