WHICH WORD?

sometime
sometimes
some time
Not a problem when speaking, but is when writing.
It can be confusing even for native speakers when writing.

ALSO:

Every time or Everytime?
SOMETIME
  • Sometime next month, I'm going to Rio.

  • Do you have sometime next week for a meeting?  Yeah, sure.
SOMETIMES
  • Do you always play tennis on the weekends?   No, just sometimes.

  • Sometimes, I think English is going to drive me crazy!
SOME TIME
  • It will take you some time to learn to speaking English fluently.
    ​
  • After knee surgery, it takes some time for it to heal.
every time or everytime?   

When speaking, not a problem!!

Correct -> "every time"