Yes guacamole and avocado are basically the same thing however you're eating the Avocado in a different form.
The guacamole is made from the skin of the Avocado so essentially you're eating Avocado when you're eating guacamole.
However guacamole is made using more than just avocados so it's in some ways a different food while it does contain Avocado.
Some of the other ingredients that guacamole contains besides Avocado are tomatoes, onion, jalapeno, garlic, cilantro, lime juice, and a touch of salt and pepper.
Depending on how you make it.
I like to make some homemade guacamole that is hot using some Jalapeno peppers ground up.