subversion vs subversive activity

subversion and subversive activity both are nouns.

Word	Noun	Adjective	Verb	Adverb
subversion	Yes	No	No	No
subversive activity	Yes	No	No	No

As nouns, subversion and subversive activity are synonyms defined as:

subversion and subversive activity: the act of subverting; as overthrowing or destroying a legally constituted government

subversion (noun)	subversive activity (noun)
destroying someone's (or some group's) honesty or loyalty; undermining moral integrity	the act of subverting; as overthrowing or destroying a legally constituted government
the act of subverting; as overthrowing or destroying a legally constituted government