Complex sentence: A common fear of public speaking is called glossophobia (or, informally, "stage fright"), this state of response by many beginners confuse with normal nerves and anxiety with a genuine phobia.
Split into simpler sentences: A common fear of public speaking is called glossophobia (or, informally, "stage fright"). This state of response by many beginners can be confused with normal nerves as opposed to being recognized as anxiety with a genuine phobia.