売 sell

The samurai is selling a nice thick pie. Do you want to BUY it?

a business ★★★★☆
商 (merchandise) + 売 (sell) = 商売 (a business)

a business, a line of work: (the camera business, the pimp game, the clock business, etc.)

sales ★★★☆☆
販 (transaction) + 売 (sell) = 販売 (sales)

hostess clubs, host clubs,strip clubs, etc. ★★☆☆☆ KUN ON
水 (water) + 商売 (a business) = 水商売 (hostess clubs, host clubs,strip clubs, etc.)

hoe ★☆☆☆☆
売 (sell) + 春 (spring /sexy) + 婦 (housewife / lady) = 売春婦 (hoe)

your sister　(when your brother when he runs out of meth money, he turns into a `売春男') !!