der Rabatt
discount
A price reduction that is deducted from the original selling price of a product or service.
Studenten erhalten auf alle Bücher 10 % Rabatt.
Students receive a 10% discount on all books.

discount
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discount
A price reduction that is deducted from the original selling price of a product or service.
Studenten erhalten auf alle Bücher 10 % Rabatt.
Students receive a 10% discount on all books.

'Rabatt' (discount) is a price reduction that you receive directly when making a purchase. It is not the same as the English word 'rebate', which is often a refund that you only receive later.
An der Kasse wurde der Rabatt automatisch abgezogen.
The discount was automatically deducted at the checkout.
You get a 'Rabatt auf' (discount on) something, with the accusative. The amount of the reduction is given with 'von' (of), with the dative.
Es gibt 20 % Rabatt auf alle Winterjacken.
There is a 20% discount on all winter jackets.
Common verbs used with 'Rabatt' (discount) are 'einen Rabatt geben' (to give a discount), 'einen Rabatt bekommen' (to get a discount), or, in formal language, 'einen Rabatt gewähren' (to grant a discount).
Das Geschäft gewährt treuen Kunden einen besonderen Rabatt.
The store grants loyal customers a special discount.
offer / deal
'das Angebot' and 'der Rabatt' are both often connected to a lower price. An 'Angebot' is a product or service that is currently being sold at a specific, often lower price. A 'Rabatt' is only the price reduction itself, for example 10 percent off. They can be confused because an offer often includes a discount. But not every discount is a separate special offer, and an 'Angebot' can also simply be a specific sales proposal.

Mit dem Gutschein bekommst du an der Kasse zehn Prozent Rabatt.
With the coupon, you get a ten percent discount at the checkout.
Der Laptop ist diese Woche im Angebot und kostet 200 Euro weniger.
The laptop is on special offer this week and costs 200 euros less.