Languages are as diverse as the people who speak them. But to foreign ears, they can be hard to tell apart.

Quartz has already tested your ear for accents. The quiz above does the same for languages using audio clips from the Wikitongues project, which aims to collect videos of native speakers in all of the world’s tongues. Can you tell the difference between Portuguese and Spanish? Farsi and Arabic? What about Mandarin and Cantonese?

Click the button above and listen closely. Do your best to identify the language coming from the mystery speaker. If you like, you can follow the links that come up when you answer to watch that speaker’s full video or learn more about their language.

The Facebook sharing image for this piece is courtesy of Wikitongues.