das Gewinnspiel
contest / prize draw
An event or promotion in which participants can win prizes by chance or by solving a task.
Ich habe bei einem Gewinnspiel im Radio zwei Konzertkarten gewonnen.
I won two concert tickets in a radio contest.

contest / prize draw
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contest / prize draw
An event or promotion in which participants can win prizes by chance or by solving a task.
Ich habe bei einem Gewinnspiel im Radio zwei Konzertkarten gewonnen.
I won two concert tickets in a radio contest.

The word is a simple compound of 'Gewinn' (win/prize) and 'Spiel' (game). So literally, it is a game in which you can win something.
Viele Firmen nutzen Gewinnspiele für ihre Werbung.
Many companies use contests for their advertising.
Pay attention to the prepositions: You take part 'an' einem Gewinnspiel (in a contest), but you win 'bei' einem Gewinnspiel (in a contest).
Möchtest du an diesem Gewinnspiel teilnehmen?
Would you like to take part in this contest?
Common verbs used with 'Gewinnspiel' (contest/prize draw) are 'ein Gewinnspiel veranstalten' (to organize a contest), 'an einem Gewinnspiel teilnehmen' (to take part in a contest), and 'bei einem Gewinnspiel gewinnen' (to win in a contest).
Unsere Firma veranstaltet ein Gewinnspiel für alle Kunden.
Our company is organizing a contest for all customers.
competition / contest
'Wettbewerb' and 'Gewinnspiel' can both mean that you can win something. The difference lies in how you win. In a 'Wettbewerb' (contest), performance usually matters: you have to be better, faster, or more creative than others. In a 'Gewinnspiel' (contest / prize draw), chance often decides, or you only have to complete a simple task. Learners may confuse the words because a prize is possible in both cases. When skill and comparison are important, 'Wettbewerb' fits. When you can get a prize through a drawing or by simply taking part, 'Gewinnspiel' fits.

Beim Einkaufen nimmt Maria an einem Gewinnspiel teil und hofft auf eine Reise.
While shopping, Maria enters a prize draw and hopes to win a trip.
Beim Wettbewerb schreibt jeder Teilnehmer eine eigene kurze Geschichte.
In the contest, each participant writes their own short story.