# Professional knowledge {% hint style="info" %} **Expertise** is in-depth skills, knowledge, and experience in a specific field. It is achieved through study, research, and practice in that field. Professional qualifications to talk about each person's ability and knowledge for a certain field, reflecting on the levels of professional training in the field. Many majors today require certain professional qualifications such as bachelor's, master's or intermediate, college. Specialization and specialization can be distinguished as follows: Specialization is the skills and knowledge that have been trained and the application of those skills in a full and methodical manner to a specific profession or field. Whereas, a specialization is a specific field within an industry, which can include a variety of specialties. Examples of professional qualifications include: primary professional qualifications, intermediate professional qualifications, college professional qualifications, university professional qualifications, master's and doctoral professional qualifications. {% endhint %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://global.nguyenhongphuong.io.vn/knowledge-of-the-business-owner-vip/professional-knowledge.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.