different between unaccustomed vs unconversant

English

un- +? accustomed

unaccustomed (comparative more unaccustomed, superlative most unaccustomed)

Not used to an event or thing, not accustomed.
- I again conveyed his key into his pocket, and counterfeiting sleep—though I never once closed my eyes, lay in bed till after he arose and went to prayers—an exercise to which I had long been unaccustomed.
He is unaccustomed to the cold.

unaccustomed

un- +? conversant

unconversant (comparative more unconversant, superlative most unconversant)

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