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.

what do you say we get back
to surface TENSION of domain walls?
The Big Bang Theory Season 9, Episode 10

It's all the nail-biting TENSION of I Spy...
The Big Bang Theory Season 8, Episode 19

there’s some TENSION in the atmosphere?
Money Heist Season 1, Episode 12

All right, now I'm starting to sense
a little TENSION.
The Big Bang Theory Season 9, Episode 24

-Tension, you think.
-Yes.
Money Heist Season 1, Episode 12