encirclement vs blockade

encirclement and blockade both are nouns.

Word	Noun	Adjective	Verb	Adverb
encirclement	Yes	No	No	No
blockade	Yes	No	Yes	No

As nouns, encirclement and blockade are synonyms defined as:

encirclement and blockade: a war measure that isolates some area of importance to the enemy

encirclement (noun)	blockade (noun)
a war measure that isolates some area of importance to the enemy	a war measure that isolates some area of importance to the enemy
	prevents access or progress

encirclement (verb)	blockade (verb)
	impose a blockade on
	obstruct access to
	render unsuitable for passage
	hinder or prevent the progress or accomplishment of