1, meaning different, sell means sales; Sell, sell; Make it sell well; Make accept, approve. Selling means auction; Betray, betray; Sales, sales; Sell.

2. The parts of speech are different. Sell is a noun and sale is a verb. Pay attention to the usage of nouns in sentences when using sell, and pay attention to the usage of verbs in sentences when using sale.

3. The prepositions of the two collocations are different. Sell is usually collocated with prepositions such as out and off. Sell off means "selling inventory goods cheaply", and sell out means "sold out" and "sold out". Sale is usually used with prepositions such as for and on, for sale means "for sale" and on sale means "for sale" and "listing".

He sold me his old bike. He sold me his old bike.

Example: This shoe store is having a sale? A week. This shoe store is on sale this week.

Extended data:

Different sentence structures when selling clothes at 30% discount;

They sell these clothes at a 30% discount. ?

Clothing sales are real shopping malls. ?

3. 30% discount.