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.

No, there isn't. Only loop quantum gravity
calculates the ENTROPY of black holes.
The Big Bang Theory Season 2, Episode 2

...because that's the temperature at which
ENTROPY reaches its minimum value.
The Big Bang Theory Season 6, Episode 18

Subject to ENTROPY,
decay and eventual death.
The Big Bang Theory Season 4, Episode 3

This is not anyone's home.
This is a swirling vortex of ENTROPY.
The Big Bang Theory Season 1, Episode 2

Now, now, let's reconsider the entire
argument but with ENTROPY reversed...
The Big Bang Theory Season 2, Episode 18