Server

[Deepa Raj]

Whether Tomcat is Web Server or Application Server?

What is the difference between Web Server and Application Server?

[Vj Kamath]

There is no clear definition of what an application server is.
In general an application server can create dynamic pages (and hence run an application) for the browser.
Tomcat has a servlet engine and can jun servlets and JSP. Hence it is not a simple web server like apache. But it is usually configured along with Apache.

[Jaikiran Pai]

Have a look at:

Difference between Web Server and Application Server