What is the term used to define "extensive knowledge and skills in a specific field"?

Question

Quizplus · Accepted Answer

Expertise is the term used to define extensive knowledge and skill in a specific field. Business savvy refers to a general understanding and intuition for business matters, experience refers to having been involved in a particular activity or job, and field knowledge is a more general term for knowledge related to a specific area or industry.

What Is the Term Used to Define "Extensive Knowledge and Skills