Versed vs. Excel vs. Good vs. Adept vs. Proficient vs. Expert

A few combinations comprising prepositions

####Versed
Versed in sth

####Excel
Excel in languages/ sports/ subject
Excel at v1ing

####Good
Good at sth
Good at v1ing

####Adept
Adept at sth
Adept at v1ing

####Proficient
Proficient in subject/ language
Proficient at it/ my job etc.

####Expert
Expert in subjects (statistics/ family law/ health care/)
Expert at languages/ v1ing
Expert on the cold war/ animals/ any art etc.

Sources
Oxforddictionaries
Dictionary.cambridge

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