Instructor vs Professor

When to use each in English, with meaning, register, and examples.

 InstructorProfessor
MeaningA person who teaches something.A teacher at a college or university.
Register-formal
CEFR levelA2A2
Part of speechnounnoun
Usage notesUse 'instructor' in formal or educational contexts, such as schools or training programs. Avoid using it in casual conversations unless discussing teaching or training.Use 'professor' in academic and serious contexts. Avoid using it in casual or informal conversations about non-academic individuals.

Frequently asked questions: Instructor vs Professor

What's the difference between "Instructor" and "Professor"?

"Instructor" means: A person who teaches something. "Professor" means: A teacher at a college or university.

When should I use "Instructor" and "Professor"?

"Professor" is formal.

Are "Instructor" and "Professor" the same CEFR level?

"Instructor" is at A2, "Professor" is at A2 on the CEFR scale.

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