Proficient
Part of speech: adjective
Definition: Good at; skilled; fluent; practiced, especially in relation to a task or skill.
Part of speech: noun
Definition: An expert.
Example sentence: I think the hard thing about all these tools is that it takes a fair amount of effort to become proficient.
Skilled
Part of speech: adjective
Definition: Having or showing skill; skilful.Requiring special abilities or training.
Example sentence: The social object of skilled investment should be to defeat the dark forces of time and ignorance which envelope our future.