Tall or Short

I am pretty short compared to other people my age. If anyone is taller than me, I consider them tall. If someone is a similar height to me or a little shorter, then that is like me. If someone is way shorter than me, then they are short.
I told my friend who is taller than me that she is tall and she did not agree. She might not be tall compared to a lot of other teenagers, but to me she is.