counteract vs countermine

counteract is not a noun while countermine is a noun.

Word	Noun	Adjective	Verb	Adverb
counteract	No	No	Yes	No
countermine	Yes	No	Yes	No

As verbs, counteract and countermine are synonyms defined as:

counteract and countermine: destroy property or hinder normal operations

Other synonyms of counteract include sabotage, subvert, undermine, weaken.

counteract (noun)	countermine (noun)
	(military) a tunnel dug to defeat similar activities by the enemy

counteract (verb)	countermine (verb)
act in opposition to	destroy enemy mines with one's own mines
destroy property or hinder normal operations	destroy property or hinder normal operations
oppose or check by a counteraction
oppose and mitigate the effects of by contrary actions