proposal
A jingler
you call the first person you wanted to call and then press flash and then called the second person and then press another flash and there you go , a three way call.
a polictian
To the point
a person who tells proudly about himself is a boaster or a braggart.
A person who writes a will is commonly referred to as the "testator."
A Philosopher
A person who writes the libretto for an opera is simply referred to as the librettist.
A poetry
A drawer.
publisher
A person who writes verses is a poet.
A columnist...?
Columnist
Author
Reporter
A screenwriter