sell
売 centers on the act of selling: transferring goods or services in exchange for money.
売 is the modern simplified form of 賣. The older form 賣 combines 出 (go out) and 買 (buy), suggesting the idea of selling as the opposite of buying. The modern simplification replaces the lower part with a stylized shape.
The top 士 looks like a merchant's stall, and the lower part resembles legs walking away with goods. Picture a merchant selling items from a stall as customers leave with their purchases.
For バイ, imagine a busy market where you buy and sell: buy -> バイ, and the merchant sells you something.
sale; offering for sale; putting on sale; putting on the market; release (for sale)
sale; sales; selling; marketing
to sell
to sell (well)
sale; selling
amount sold; sales; proceeds; takings; turnover
selling off; disposal by sale; sale
trade; business; commerce
trade; buying and selling; trafficking (e.g. of humans, arms, drugs); dealing
resale
Yomiuri (newspaper, etc. group)
prostitution
retail
selling out; being sold out
sold-out
selling area; counter; section; department; sales floor
wholesale; wholesaling
stand; stall; booth; kiosk; store
auction
article for sale; goods for sale; offering
(bargain) sale
popular line (of products); best-selling line; hot sellers
monopoly; monopolization; exclusive sales rights
bargain sale; selling cheaply; selling at a low price
special sale; bargain sale
selling on the spot
sales promotion; hard selling
sales; demand
seller; vendor
traitor (to one's country); quisling
illicit sale; smuggling; bootlegging; trafficking
advance sale; booking
to put on the market; to put out for sale; to put on sale; to begin selling; to market
to build a market for; to promote (a product); to sell; to become well known
high-pressure selling; aggressive peddling; the hard sell; high-pressure salesman
to be sold out
bargain sale
selling at a fire-sale price; clearance sale; dumping
first business conducted by retailers in the New Year
ticket sold in advance; advance ticket
wholesale market
wholesale price
list of top-selling products
proceeds (from a sale); takings
sales; amount sold; proceeds
prostitute
retail store; retail shop
retail price
new release; putting (a new product) on sale; launch
vending machine
sales staff; salesperson
online shopping service (with delivery by mail); mail order; mail-order sales; shop-by-mail service