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.

You hear any UNION talk,
you let me know.
The Big Bang Theory Season 2, Episode 18

We need to act first
and kill this UNION in its crib.
Game of Thrones Season 3, Episode 5

Here, I am janitor.
In former Soviet Union, I am physicist.
The Big Bang Theory Season 1, Episode 13

I'll take you
to Union Station,
The Big Bang Theory Season 12, Episode 8

You're not Western Union.
Breaking Bad Season 5, Episode 15