Finding different rows

I have two files. They are prety much the same, except a few lines. I would like to get the differences between the two file, but only those differences and nothing more.

"diff" and "sdiff" cannot seem to do it. "sdiff -s" gets close, but I still get "less than" or "greater than" signs in the result. I would only like to get the different rows, no more, no less.

Thank you!

try 'man comm'

You are my hero! Thank you.