The best way to learn proper English is to read news report, and watch news on TV. Watching TV shows is a great way to learn casual English, slang words, understand culture reference and humor. If you have already watched these shows then you may recall the words used in the following dialogs.

How long before the King of Meereen
comes to claim my PILLOW?
Game of Thrones Season 5, Episode 7

I'll get you a blanket and a PILLOW.
The Big Bang Theory Season 1, Episode 7

If you don't wanna snuggle, fine,
but we're not building a PILLOW wall.
The Big Bang Theory Season 10, Episode 4

...and have naked PILLOW fights?
The Big Bang Theory Season 2, Episode 7

that would make a nice needlepoint PILLOW.
The Big Bang Theory Season 10, Episode 18