As nouns the difference between secession and subversion
is that secession is secession while subversion is subversion.
secession
English
Usage notes
A common example of usage is the withdrawal of 11 Southern states of the United States of America from the Union in 1860–1861, precipitating the U.S. civil war
Related terms
* secessionist
subversion
English
Noun
(
en noun)
The act of subverting or the condition of being subverted.
A systematic attempt to overthrow a government by working from within; undermining.
Related terms
* subversive
* subvert