Usually, “everything” is a noun and “all” is an adjective. So, “I like everything” or “Everything is broken.” And, “I like all things” or “All people want peace.”

Hello Melqui! "everything" is used as a pronoun - a word which takes the place of (or functions as) a noun, for example: "Everything that he told me, seems to be coming true." "all" can be used as a predeterminer, determiner and pronoun referring to the whole quantity or extent of a particular group or thing. For example: "All the people I met at the party seemed very nice." "all" can also be used as an adverb meaning "completely". For example: "She was dressed all in red."; "all" can also be used as an adverb used to emphasize a temporary quality. For example, "my ankle's gone all wobbly" "all" can also be used as an adverb (in games) used after a number to indicate an equal score. For example: "After extra time it was still two all." I hope that helps!

the pronoun everything is used in the singular, the adjective all is used either with plural nouns or with noncountables. All as a pronoun can be either plural or singular. Examples: everything is here. All things are here. All is here. I have three cars - all (of them) are broken.