Expert
Part of speech: adjective
Definition: Extraordinarily capable or knowledgeable. Characteristic of an expert.
Part of speech: noun
Definition: A person with extensive knowledge or ability in a given subject. A player ranking just below master.
Example sentence: Every book is a new journey. I never felt I was an expert on a subject as I embarked on a project.
Adept
Part of speech: adjective
Definition: Well skilled; completely versed; thoroughly proficient.
Part of speech: noun
Definition: One fully skilled or well versed in anything; a proficient; as, adepts in philosophy.
Example sentence: The level of dynamism is a matter of how fertile the country is in coming up with innovative ideas having prospects of profitability, how adept it is at identifying and nourishing the ideas with the best prospects, and how prepared it is in evaluating and trying out the new products and methods that are launched onto the market.