purging vs katharsis

purging and katharsis both are nouns.

Word	Noun	Adjective	Verb	Adverb
purging	Yes	Yes	No	No
katharsis	Yes	No	No	No

As nouns, katharsis is a hyponym of purging; that is, katharsis is a word with a more specific, narrower meaning than purging:

purging: an act of removing by cleansing; ridding of sediment or other undesired elements
katharsis: (psychoanalysis) purging of emotional tensions

Other hyponyms of purging include abreaction, catharsis, catharsis, purgation.

purging (noun)	katharsis (noun)
an act of removing by cleansing; ridding of sediment or other undesired elements	(psychoanalysis) purging of emotional tensions
the act of clearing yourself (or another) from some stigma or charge	purging the body by the use of a cathartic to stimulate evacuation of the bowels

purging (adjective)	katharsis (adjective)
serving to purge or rid of sin