What is difference between Parse Tree, Annotated Parse Tree and Activation Tree ?(compiler)

Question

I know what is a Parse Tree and what is an Abstract Tree but I after reading some about Annotated Parse Tree(as we draw detailed tree which is same as Parse Tree), I feel that they are same as Parse Tree.

Can anyone please explain differences among these three in detail ?

Thanks.

Answer 1

AN ANNOTATED PARSE TREE is a parse tree showing the values of the attributes at each node. The process of computing the attribute values at the nodes is called annotating or decorating the parse tree.

For example: Refer link below, it is annotated parse tree for 3*5+4n

https://i.stack.imgur.com/WAwdZ.png