completely vs all

completely is not an adjective while all is an adjective.

Word	Noun	Adjective	Verb	Adverb
completely	No	No	No	Yes
all	No	Yes	No	Yes

As adverbs, completely and all are synonyms defined as:

completely and all: to a complete degree or to the full or entire extent; Completely or entirely

Other synonyms of completely include altogether, entirely, right, totally, whole, wholly.

completely (adjective)	all (adjective)
	(quantifier) used with either mass or count nouns to indicate the whole number or amount of or every one of a class
	completely given to or absorbed by

completely (adverb)	all (adverb)
so as to be complete; with everything necessary	to a complete degree or to the full or entire extent; Completely or entirely
to a complete degree or to the full or entire extent; Completely or entirely