An expert.
Expert
The knowledge of a subject held by a person unqualified in that subject.
Yes, the noun 'expert' is a common noun, a general word for any person with special skill in or knowledge of a subject.
Their knowledge of the subject.
The person have this subject in his or her graduation or in postgraduation.The person should have knowledge of genetics .
a person who has special skill or knowledge in some particular field
To gain more knowledge on the subject of interest - and share their knowledge with others.
a specialist
A "Chess Maven" refers to a person who has special knowledge or experience in chess ; an expert .
knowledge
If you're installing a new computer sound system, then you'll need some basic knowledge on the subject in order to succeed. It's important to make sure that the computer in question can support the new sound system.
A philosophical assumption is coming to a conclusion based on having a background and knowledge of a particular subject or discipline.When a philosophical assumption is made, a person uses their background knowledge of a subject to answer questions or make a decision using the values and principles of that subject.
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