abreaction vs purging

abreaction and purging both are nouns.

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

As nouns, purging is a hypernym of abreaction; that is, purging is a word with a broader meaning than abreaction:

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

Other hypernyms of abreaction include purge.

abreaction (noun)	purging (noun)
(psychoanalysis) purging of emotional tensions	an act of removing by cleansing; ridding of sediment or other undesired elements
	the act of clearing yourself (or another) from some stigma or charge

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