Floor
noun
The kanji and the word are exactly the same. That means they share meanings as well.
Since this word is made up of a single kanji, it probably uses the kun'yomi reading. You learned this reading with the kanji, but here’s a mnemonic in case you need a refresher:
You look at the floor. It's disgusting. Dirtiest and nastiest floor you've ever seen. You say yucka (ゆか) because it's covered in yucca (ゆか). Plus, it's all rotten. Yucka!
今日は床にモップをかけます。
I will mop the floor today.
床にゴキブリがいる！
There are cockroaches on the floor!
床の上でヨガをしているのが私の兄です。
That is my brother doing yoga on the floor.