GUIDE - [noun] somebody who takes you to the interesting places and tells you about them, somebody who helpes you travel in dangerous areas
Examples of use
You need a guide to show you the city, because you don't even know the language.
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English speaking practise
Remember that if you don't use that word in English conversations or writing you'll forget it in a short time. So the best thing you can do to learn this word is just trying to use it in speaking or writing. Remember also that practise is the key to fluent english speaking.
You can always find a partner, who would also like to improve his/her