Questions about example sentences with, and the definition and usage of "Heap"

A: a heap is the complete opposite. it's an untidy collection of objects placed haphazardly on top of each other.

example: a disordered heap of a lot of boxes

you can also use this word to indicate that there is a lot of something

example: we have heaps of room

A: A heap is big. A pile can be small, medium, or big.

A: I don't think you would ever hear it, but it is grammatically correct and makes sense.