Anything:
* Implies choice and possibility. "Anything" suggests that you have options, and you can choose something from a wide range of possibilities.
* Focuses on individual items. It often refers to a single item or action.
* Example: "You can order anything on the menu." (There are various dishes to choose from.)
Everything:
* Implies inclusiveness and totality. "Everything" refers to the entire set of possibilities, encompassing every single item or action.
* Focuses on the whole. It suggests that you are considering all elements, without exception.
* Example: "I ate everything on my plate." (No food was left uneaten.)
Here's another way to think about it:
* Anything = "Some unspecified thing"
* Everything = "All things"
In summary:
* Anything implies choice and focuses on individual items.
* Everything implies inclusiveness and focuses on the whole.