block up vs barricade

block up is not a noun while barricade is a noun.

Word	Noun	Adjective	Verb	Adverb
block up	No	No	Yes	No
barricade	Yes	No	Yes	No

As verbs, block up and barricade are synonyms defined as:

Other synonyms of block up include bar, block, block off, blockade, stop.

block up (noun)	barricade (noun)
	a barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc.
	a barrier (usually thrown up hastily) to impede the advance of an enemy

block up (verb)	barricade (verb)
render unsuitable for passage	block off with barricades
	prevent access to by barricading
	render unsuitable for passage