word "challenge"
I often face the word "challenge". But I do not understand in what cases is it used. Please explain and give examples. THank you very much

Question

word "challenge"
I often face the word "challenge". But I do not understand in what cases is it used. Please explain and give examples.  THank you very much

Answer

Challenge can be used a few ways. The most common context would be " to challenge someone" 
" I challenge you to a race" 
 
You can also use challenge when you are explaining something that was hard to do, or a goal that was hard to reach.
" he made it to the top of the mountain, it was a challenge"

Challenge, challenging, challenged, challenger

Answer

We often use the word 'challenge' to mean difficult.