Educator or smart a$$
Cheesy
A person who is an expert in grammar is called a linguist or a grammatician.
"Laoshi" is a Chinese term that translates to "teacher" or "master." It is commonly used to address or refer to a teacher or someone who is an expert in a particular field.
A music teacher.
Craftist ex. Olivia Nolan is an expert craftist
"Shishou" is a Japanese term that typically translates to "teacher" or "master" in English. It is often used to show respect to someone who is an expert or authority in a particular field.
Soapmaker Soapcrafter A cosmetologist is someone who is an expert in the use of cosmetics so I would not use it for a soap maker.
They are known as "expert" witnesses.
I simply call them professor. I think this is more formal for someone in the faculty at the same time is also a researcher or a student with authority.
Bulgogi. He taught me how to twirl. I miss him.
A guru
If it is professional, it could be the following: Tutor Teacher "Study buddy" It really depends.