購買 (こうばい)procurement; purchase; buying

procurement; purchase; buyingnoun (common) (futsuumeishi), noun or participle which takes the aux. verb suru
school store; co-op; school canteennoun (common) (futsuumeishi)

購買, its kanji, and other words that share them.Open this graph

Kanji in 購買

購入こうにゅうpurchase; buy
購読こうどくbuying and reading (book, magazine, etc.); subscribing (incl. free subscriptions)
購買力こうばいりょくbuying power; purchasing power
定期購読ていきこうどくsubscription (e.g. to a magazine)
一括購入いっかつこうにゅうlump-sum purchase; bulk purchase
予約購読よやくこうどくsubscription
事前購入じぜんこうにゅうadvance purchase (e.g. fare)
事前購入割引運賃じぜんこうにゅうわりびきうんちんadvance purchase excursion fare; APEX fare
売買ばいばいtrade; buying and selling
買収ばいしゅうacquisition (esp. corporate); buy-out
買いかいbuying; shopping
買い物かいものshopping; purchased goods
買い取りかいとりpurchase; buying
買うかうto buy; to purchase
買い占めかいしめbuying up of goods; cornering (market)
買い付けかいつけbuying; purchasing

See how 購買 connects to the rest of Japanese.