Difference between servlet and web service

Question

What is the difference between these 2? I found few results on google nothing conclusive.

Here is a follow up question:

Say I create spring mvc web app ann

Answer 1

What you're describing is a web application, where a human uses a browser to interact with a software system.

A web service is a way for software systems to communicate with each other using HTTP and XML or JSON, without any humans involved.

A servlet is a Java-specific way of writing software that responds to HTTP requests. Spring MVC abstracts away a lot of the implementation detail to make writing web applications easier, but uses servlets under the covers.