Fear - false evidence appearing real.
Fear of the unknown have kept some people stagnant in life. Fear of what people will say have buried many creative minds in the grave. Fear of taking risk has made some people to lose being millionaires.
Fear will always be there and it's left for us to take responsibility and never let it get the most of us.
I tend to think fear is bigger, this is because it tests people in different ways. So definitions might differ, especially for people who have experienced the terrible side of life and done things to survive