catharsis vs purgation

catharsis and purgation both are nouns.

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

As nouns, catharsis and purgation are synonyms defined as:

catharsis and purgation: purging the body by the use of a cathartic to stimulate evacuation of the bowels

Other synonyms of catharsis include katharsis.

catharsis (noun)	purgation (noun)
(psychoanalysis) purging of emotional tensions	purging the body by the use of a cathartic to stimulate evacuation of the bowels
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
	a ceremonial cleansing from defilement or uncleanness by the performance of appropriate rites