What Is the Difference between 'All' and 'Everything'?
But it is also used as a pronoun (without any nouns following it).
'All' is used in the construction where we want to specifically say all of a group.
In summary, 'everything' is an indefinite pronoun and refers to each and every one thing. The important thing to know is that 'everything' cannot be used as a determiner and cannot be followed by a noun.
Similarities between 'All' and 'Everything'
When 'everything' and 'all' are both used as pronouns, in some cases we can use them interchangeably.