
die Kasse
checkout
The place in a store, supermarket, or restaurant where customers pay for their goods or services.
Die Schlange an der Kasse war sehr lang.
The line at the checkout was very long.
checkout / cash register
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checkout
The place in a store, supermarket, or restaurant where customers pay for their goods or services.
Die Schlange an der Kasse war sehr lang.
The line at the checkout was very long.

cash register
A container or electronic device (cash register) used to store cash in a store.
Der Verkäufer zählte das Geld in der Kasse am Ende des Tages.
The salesperson counted the money in the cash register at the end of the day.

health insurer
A colloquial short form for health insurance fund; statutory or private health insurance.
Übernimmt die Kasse die Kosten für diese Behandlung?
Will the health insurer cover the costs of this treatment?

funds
The total available financial resources of an organization, association, or project.
Nach dem teuren Fest war die Vereinskasse fast leer.
After the expensive celebration, the club's funds were almost empty.

box office
A counter where tickets for events such as concerts, theater performances, or films are sold.
Die Kasse des Theaters öffnet eine Stunde vor der Vorstellung.
The theater box office opens one hour before the performance.
The exact meaning of 'Kasse' often depends on the place. In a supermarket, the 'Kasse' is the checkout where you pay; in a theater or cinema, it is the ticket counter or box office.
Wir müssen uns beeilen, sonst schließt die Theaterkasse gleich.
We have to hurry, otherwise the theater box office will close soon.
When 'Kasse' means the place where you pay in a store, typical phrases are 'an der Kasse stehen' (to be standing at the checkout), 'an der Kasse warten' (to wait at the checkout), or simply 'zur Kasse gehen' (to go to the checkout).
Ich gehe schon mal vor und stelle mich an der Kasse an.
I'll go ahead and get in line at the checkout.
In everyday language, 'die Kasse' is very often used as a colloquial abbreviation for 'die Krankenkasse' (the health insurance fund/health insurer).
Ich muss bei der Kasse anrufen und fragen, ob die Kur genehmigt wurde.
I need to call the health insurer and ask whether the treatment course was approved.
You can recognize the meaning 'Krankenkasse' (health insurer) when the topic is medical treatments, cost coverage, or insurance. Typical verbs are 'bezahlen' (to pay), 'übernehmen' (to cover), or 'einreichen' (to submit).
Die Kosten für das Medikament werden von der Kasse übernommen.
The costs of the medication are covered by the health insurer.
When talking about a group's finances, people often speak of the 'Vereinskasse' (club funds) or 'Klassenkasse' (class fund). Fixed expressions are 'die Kasse ist leer' (the funds are empty) or 'Geld in die Kasse legen' (to put money into the fund).
Für die Klassenfahrt hat jeder 20 Euro in die Kasse eingezahlt.
For the class trip, everyone paid 20 euros into the fund.
insurance / assurance
Versicherung can generally refer to a company that offers insurance contracts. In conversation, Kasse is a shortened form of Krankenkasse and therefore specifically means a health insurer. In a clear healthcare context, either term is possible; Kasse sounds more colloquial and refers more narrowly to health insurance.

Meine Kasse übernimmt die Kosten für die Behandlung.
My health insurer covers the cost of the treatment.
Meine Versicherung übernimmt die Kosten für die Behandlung.
My insurance company covers the cost of the treatment.