Phobia - A type of anxiety disorder

A phobia is an overwhelming and unreasonable fear of an object or situation that poses little real danger. Unlike the brief anxiety most people feel when they give a speech or take a test, a phobia is long-lasting, causes intense physical and psychological reactions, and can affect your ability to function normally at work or in social settings.

Anxiety - Human emotion or Mental disorder

The word anxiety comes from the Latin word anxietas, which means to choke or upset. The symptoms therefore include emotional or behavioral symptoms as well as ways of thinking that are responses to feeling as if one is in danger. Anxiety happens as a normal part of life. It is a normal human emotion that everyone experiences at times.