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.

to the Wisconsin Sheep & Wool Festival.
The Big Bang Theory Season 9, Episode 11

Just working it under all those
layers of WOOL and polyester.
The Big Bang Theory Season 5, Episode 10

with this cute little
lump of WOOL.
The Big Bang Theory Season 7, Episode 5

And some of it is WOOL,
so dry flat if possible.
The Big Bang Theory Season 8, Episode 23

Cotton blanket 'stead of WOOL
The Big Bang Theory Season 8, Episode 23