derail vs countermine

derail is not a noun while countermine is a noun.

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

As verbs, countermine is a hypernym of derail; that is, countermine is a word with a broader meaning than derail:

Other hypernyms of derail include counteract, sabotage, subvert, undermine, weaken.

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

derail (verb)	countermine (verb)
run off or leave the rails	destroy enemy mines with one's own mines
cause to run off the tracks	destroy property or hinder normal operations