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 we took a run at Archimedes'
water DISPLACEMENT,
The Big Bang Theory Season 12, Episode 17

No replacement for DISPLACEMENT.
Breaking Bad Season 5, Episode 16