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.

and you're tossing yours
out a WINDOW?
Breaking Bad Season 5, Episode 11

Now, I have a WINDOW built in
after Phantom Menace,
The Big Bang Theory Season 7, Episode 22

And he got to the terrace
through the WINDOW.
Money Heist Season 1, Episode 5

- I need to use your WINDOW.
- Oh, hey. Yeah, no, sure, go ahead.
The Big Bang Theory Season 1, Episode 17

Yes. If you use my toothbrush,
I'll jump out that WINDOW.
The Big Bang Theory Season 1, Episode 7