Word Example from TV Shows
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.

Stan Lee does not have
a contagious skin DISEASE.
The Big Bang Theory Season 3, Episode 16

Look, you have a DISEASE.
lt's like you're an alcoholic, right?
Breaking Bad Season 4, Episode 6

I mean, it's not like either one of us
has heart DISEASE.
The Big Bang Theory Season 4, Episode 24

After all, it’s a DISEASE