annihilate vs decimate

annihilate and decimate both are verbs.

Word	Noun	Adjective	Verb	Adverb
annihilate	No	No	Yes	No
decimate	No	No	Yes	No

As verbs, annihilate and decimate are synonyms defined as:

Other synonyms of annihilate include carry off, eliminate, eradicate, extinguish, wipe out.

annihilate (verb)	decimate (verb)
kill in large numbers	kill in large numbers
	kill one in every ten, as of mutineers in Roman armies