PUSH and POP are two basic operations used in data structures to insert and remove elements from a stack.

The PUSH operation adds an element to the top of the stack, whereas the POP operation removes the element from the top of the stack.

Here's a more detailed explanation of each operation:

PUSH:

• Adds a new element to the top of the stack
• Increases the stack size by one
• This operation is sometimes called "pushing" an element onto the stack

POP:

• Removes the element from the top of the stack
• Decreases the stack size by one
• This operation is sometimes called "popping" an element off the stack

In simple terms, PUSH adds an element to the stack, and POP removes an element from the stack.

Here's an example to illustrate how PUSH and POP work:

Let's say we have a stack that initially contains the elements [1, 2, 3]. If we perform a PUSH operation with the element 4, the stack will then contain the elements [1, 2, 3, 4]. If we then perform a POP operation, the top element (4) will be removed from the stack, and the stack will contain the elements [1, 2, 3] again.

In summary, PUSH adds an element to the top of the stack, and POP removes the top element from the stack.

PUSH and a POP

Here we are a discussion about the functionality of Pushing and popping. These are applied to the way any data is stored and retrieved in a stack. The push denotes data being added to it, meaning data is being “pushed” onto the stack. Even then, a pop denotes data retrieval, and in particular, refers to the topmost data being accessed.