plunder vs steal

plunder and steal both are nouns.

Word	Noun	Adjective	Verb	Adverb
plunder	Yes	No	Yes	No
steal	Yes	No	Yes	No

As verbs, steal is a hypernym of plunder; that is, steal is a word with a broader meaning than plunder:

Other hypernyms of plunder include rip, rip off.

plunder (noun)	steal (noun)
goods or money obtained illegally	a stolen base; an instance in which a base runner advances safely during the delivery of a pitch (without the help of a hit or walk or passed ball or wild pitch)
	an advantageous purchase

plunder (verb)	steal (verb)
destroy and strip of its possession	steal a base
steal goods; take as spoils	move stealthily
plunder (a town) after capture	take without the owner's consent
take illegally; of intellectual property