Who is the hypnotist and who is the hypnotized?
If you go by professional thinking, hypnotist is the one who is trained and certified to do hypnosis and the hypnotized is his client (the layman).
If you go by a wider overview, then each person is both the hypnotist and the hypnotized.
Why?
I am not giving the answer here….if you are keen, please write in your view in the comment.