A "hanger" in BrE is the plastic or metal thing that you hang your clothes on in the wardrobe. They're officially called "clothes hangers" but most people just refer to them as hangers.
The small hooks you hang keys on are keyhooks.
Note that whatever noun you use for the hook, you need to add the article before it.
Remember to capitalise the word "I" (first person singular) at all times.
Student or Learner