"You wear a coat."
"Płaszcz" is usually longer than "kurtka" (and often more elegant). Try Google Image Search to get the difference.
Polish (and many European languages) has two different concepts of you
you singular (English used to have thou for that)- addressing only one person- ty you plural - addressing a group of people - wy
/also you can edit your post, there is no need to write a second comment/