all over vs everywhere

all over is an adjective but everywhere is not an adjective.

Word	Noun	Adjective	Verb	Adverb
all over	No	Yes	No	Yes
everywhere	No	No	No	Yes

As adverbs, all over and everywhere are synonyms defined as:

all over and everywhere: to or in any or all places; pronoun, location; quantifier: universal

Other synonyms of all over include everyplace.

all over (adjective)	everywhere (adjective)
having come or been brought to a conclusion

all over (adverb)	everywhere (adverb)
to or in any or all places; pronoun, location; quantifier: universal	to or in any or all places; pronoun, location; quantifier: universal
over the entire area