what is the difference between web application and web services ?
"What is" type of questions are generally best handled by Wikipedia, or a web search of the question:
web application,
web service,
difference between web application and web service
also can we deploy the web services same as web application.
All Java WS implementations I've encountered (Axis, Axis2, Jersey, JAX-WS RI, etc.) are based on the
Servlet API, and as such can be part of a standard Java web app.