Different Web Servers

Ok so I have an pretty long question. I apologize in advance. Here goes:

Can someone please describe and talk about three different types of web servers. It could be these three web servers or any other. Nginx, Apache Tomcat, Jigsaw etc. And then compare and differentiate between the three; explaining what their advantages and disadvantages are.
I apologize again about asking for so much; but I could really use the help, and I'm not good at comparing things together also.

There are so many differences you could write books on comparisons and differences. It depends on what criteria are important for the intended use. The three links below contain in-depth documentation on each of the three you list. You have to study the features and compare those that are critical to your task.

http://nginx.org/en/
http://tomcat.apache.org/
http://www.w3.org/Jigsaw/