Expertise vs. Proficient

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Difference Between Expertise and Proficient
Expertisenoun
Great skill or knowledge in a particular field or hobby.
The scientist has expertise in the field of nuclear fusion.Proficientadjective
Good at something; skilled; fluent; practiced, especially in relation to a task or skill.
He was a proficient writer with an interest in human nature.Expertisenoun
Advice, or opinion, of an expert.
Proficientnoun
An expert.
Expertisenoun
skillfulness by virtue of possessing special knowledge
Proficientadjective
having or showing knowledge and skill and aptitude;
adept in handicraftsan adept juggleran expert joba good mechanica practiced marksmana proficient engineera lesser-known but no less skillful composerthe effect was achieved by skillful retouchingADVERTISEMENT