A Politition.
A political scientist.
A person who studies international relations is often referred to as an international relations scholar or expert, or simply as a student of international relations.
A person who studies Political Science is called a political scientist.
Aristocracy.
A term used to call a regifter is "regifter." It refers to someone who gives away a gift they previously received to someone else.
Someone from Airdrie is called an Airdronian.
You call someone that studies metal a metallurgist.
A physicist.
a person who studies planets is a planetologist.
There is no special name for someone who studies Hebrew.
An Anthropologist.
malacologist
euclidist
Gemologists
psychologist
A numismatist.
A Zoologist
a meteorologist.