To Buy
transitive verb, godan verb
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means buy so the verb form is to buy.
Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. If you remember your kanji readings, you'll be just fine.
今日も朝、コンビニでコーヒーを買う。
I'm buying coffee at the convenience store in the morning today as well.
トイレットペーパーは平日に切れないよう、いつも多めに買います。
I always buy extra toilet paper so that we don't run out on weekdays.
車も家も中古で買いました。
I bought both my car and my house used.