As verbs the difference between purging and venting
is that purging is present participle of lang=en while venting is present participle of lang=en.
As nouns the difference between purging and venting
is that purging is the act by which something is purged while venting is the act by which something is vented.
purging
English
Verb
(head)
Noun
(
en noun)
The act by which something is purged.
(medicine) vomiting
* 1849 , The Journal of Health and Disease (page 98)
- He had violent pains in his belly, and purgings
venting
English
Verb
(head)
Noun
(
en noun)
The act by which something is vented.
* 2007 , Samuel Upton Newtan, Nuclear War I and Other Major Nuclear Disasters of the 20th Century (page 94)
- It wasn't until 1978 that the general public learned that nuclear ventings were not unusual.