purification vs refining

purification and refining both are nouns.

Word	Noun	Adjective	Verb	Adverb
purification	Yes	No	No	No
refining	Yes	No	No	No

As nouns, purification and refining are synonyms defined as:

purification and refining: the process of removing impurities (as from oil or metals or sugar etc.)

Other synonyms of purification include refinement.

purification (noun)	refining (noun)
the act of cleaning by getting rid of impurities	the process of removing impurities (as from oil or metals or sugar etc.)
the act of purging of sin or guilt; moral or spiritual cleansing
a ceremonial cleansing from defilement or uncleanness by the performance of appropriate rites
the process of removing impurities (as from oil or metals or sugar etc.)