purging vs purgation

purging and purgation both are nouns.

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

As nouns, purgation is a hyponym of purging; that is, purgation 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
purgation: purging the body by the use of a cathartic to stimulate evacuation of the bowels

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

As nouns, purging and purgation are synonyms defined as:

purging and purgation: the act of clearing yourself (or another) from some stigma or charge

Other synonyms of purging include purge.

purging (noun)	purgation (noun)
an act of removing by cleansing; ridding of sediment or other undesired elements	purging the body by the use of a cathartic to stimulate evacuation of the bowels
the act of clearing yourself (or another) from some stigma or charge	the act of clearing yourself (or another) from some stigma or charge
	a ceremonial cleansing from defilement or uncleanness by the performance of appropriate rites

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