overturn vs subvert

overturn is a noun but subvert is not a noun.

Word	Noun	Adjective	Verb	Adverb
overturn	Yes	No	Yes	No
subvert	No	No	Yes	No

As verbs, overturn and subvert are synonyms defined as:

Other synonyms of overturn include bring down, overthrow.

overturn (noun)	subvert (noun)
the act of upsetting something
an improbable and unexpected victory

overturn (verb)	subvert (verb)
change radically	to raze to the ground, also figuratively
rule against	cause the downfall of; of rulers
cancel officially	destroy property or hinder normal operations
turn from an upright or normal position	corrupt morally or by intemperance or sensuality
cause to overturn from an upright or normal position
cause the downfall of; of rulers