explain?

"Chai" means "tea", so "Chai Tea" is "Tea Tea".

"ATM" means "Automatic Teller Machine", so "ATM Machine" is "Automatic Teller Machine Machine".

Both are mentioned in the animated movie "Spider-Man: Across the Spider-Verse".

Actually, in English, Chai does not mean tea, it means a specific flavor of tea. If you don't believe me, try ordering some Earl Grey Chai, see what happens.

If your server is Indian, they'll likely react positively, and get you what you want.

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Sure, but "chai tea" is still redundant. I have never used that term and ordered chai in many places without confusion.

it's redundant at a place that serves chai, but it isn't redundant at a place that does not serve chai, because you're skipping the "what is chai" question from whoever you're querying.

PIN number

Town names too: https://en.wikipedia.org/wiki/Montebello_della_Battaglia

Not in the Wikipedia page (but check the Italian version): it started as "Mons Belli" (Mount of the Battle) because of a battle fought by the Romans a few years before the Hannibal campaign. Then the original meaning was lost and it gained another "of battle" in the 1800s. Mount of the Battle of the Battle. Hopefully there won't be another one to add.

Lake Tahoe (Lake Big Lake). River Avon (River River). https://en.wikipedia.org/wiki/List_of_tautological_place_nam...

Except places are now offering Chai Latte Coffee so if you don't specifically order Chai Tea Latte, you could get some thing totally different than expected. I learned this the hard way.

> Chai, a word for tea in numerous languages

https://en.wikipedia.org/wiki/Chai