購入 (kōnyū) means “purchase” | MotiTan Japanese Dictionary

More examples

購入後は、レシートを大切に保管してください。kō nyū ato wa re shī to o tai setsu ni ho kan shi te ku da sa i

After making a purchase, please keep the receipt safe.

Describes obtaining something by paying money for it, with attention to the transaction rather than merely having the item.

買い物kaimono: The act of buying goods, often viewed as shopping or an outing.

物やサービスなどを、代金を支払って手に入れること。mono ya sā bi su na do o dai kin o shi hara tte te ni i re ru ko to

購入 (kōnyū) combines 購 (kō, "buy") and 入 (nyū, "enter"), expressing the idea of buying something and bringing it in.

購入 (kōnyū) is more formal than 買う (kau) and often appears on online shopping buttons and in purchase notices.