A person who studies the origins of words is called an etymologist. They investigate the history and development of words, tracing their roots and understanding how their meanings have changed over time.
A person who studies languages is called a linguist.
A person who uses a lot of words can be referred to as verbose or loquacious.
Someone who studies speech is called a speech pathologist or a speech-language pathologist.
A person who studies writing can be called a linguist or a philologist, depending on the specific focus of their study. They may also be referred to as a literary scholar or a composition specialist.
A person who uses sophisticated words is often called eloquent or articulate, with a strong command of language and vocabulary.
Philologist
The study of word origins is called etymology. In my student days I was told that it is one of the less exact areas of historical linguistics.
A person who studies genealogies is a genealogist.
a person that studies gems is called a gemologist.
a person who studies people but not an psychologist
what do you call somebody who studies snails.
A person that studies animals is called a Zoologist.
A person who studies birds is called an ornithologist.
A person who studies birds is called an Ornitholoigst
A person who studies sociology is called a sociologist. They examine human behavior, relationships, and societies to understand how they function and interact.
A person who studies theology is called a theologian.
The study is paleontology so I think a person who studies it is a paleontologist.