"Punga are un fermoar."

Translation: The bag has a zipper.

[Pickle1116]

I am English and we just say "zip", "zipper" is American

[jonathan.siles]

duolingo use american english because it has more speakers

[TseDanylo]

I wouldn't really say a bag has a zipper. A zip is on things like bags, pencil cases, etc. but a zipper is on stuff like men's trousers and shorts.

[Wes708337]

In America they're all zippers. Zip isn't even a noun.