You might be referring to a "Legal Assistant," or "Legal Aide." Someone who is skilled, or trained in the law but who has not studied law or passed the Bar Exam.
A person who has studied physics is called a physicist.
Sometimes a duo.
A lazy person is sometimes colloquially known as a couch potato.
Abraham Lincoln
Wind is part of weather, so wind would be studied by a weather scientist, more formally called a meteorologist.
sometimes called a "bird dog" fee.
A "Writ of Extradtion" sometimes called a "Governor's Warrant."
A person who studies the Earth is called a geologist. A geologist mainly studies the origin of the Earth, its structure and composition.
Many, many people have studied biochemistry in Mississippi.
Someone who serves food is called a "waiter" or a "waitress" and sometimes called "staff".
A cot or a single bed, sometimes called a twin bed.
Geologists and vulcanologists.