Building
noun
A thing you build is a building. There aren't too many other things you build, at least not to this extent.
The reading is a bit weird. It's kun'yomi readings across the board, meaning your knowledge of 建てる hopefully can come into play here. A building is something you build, so how do you say "to build"? It's 建てる (たてる). Since it's a thing you build, it's a たてもの. This reading is a bit confusing, but hopefully after a while you'll get it if you get it wrong too many times! Maybe if you think about the building you're in and call it a 建物 a few times it'll sink in better?
建物の2Ｆ
the 2nd floor of a building
建物の外
outside the building
建物の前
in front of the building
建物を建てる
to construct a building
建物を作る
to build a building
建物を見る
to look at a building
建物がある
there is a building
建物が見える
a building is visible
建物がならぶ
buildings line up
すてきなデザインの建物ですね。
This is very nicely designed building, isn't it?
この建物には、たくさんのオフィスが入る予定です。
The building will house a number of offices.
あそこに赤い建物があるのが見えますか？あの赤い建物は、地元のアートギャラリーです。
See that red building over there? That red building is a local art gallery.