refiner

As a verb purify

is to cleanse (something), or rid (it) of impurities.

As a noun refiner is

agent noun of refine; one who refines.

As nouns the difference between refiner and purifier

is that refiner is agent noun of refine; one who refines while purifier is a person or device that purifies]] (by removing [[impurity|impurities).

As an adjective refined

is showing or having good feelings or good taste.

As a verb refined

is (refine).

As a noun refiner is

agent noun of refine; one who refines.

As a noun refiner

is agent noun of refine; one who refines.

As a verb refines is

third-person singular of refine.

As nouns the difference between refiner and repiner

is that refiner is agent noun of refine; one who refines while repiner is one who repines.

As nouns the difference between refiner and definer

is that refiner is agent noun of refine; one who refines while definer is agent noun of define; one who defines.

As nouns the difference between refinery and refiner

is that refinery is a building, or a mass of machinery, used to produce refined products such as sugar, oil, or metals while refiner is agent noun of refine; one who refines.