purgation vs catharsis

purgation and catharsis both are nouns.

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

As nouns, purgation and catharsis are synonyms defined as:

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

Other synonyms of purgation include katharsis.

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