Difference between submit vs click in Selenium Webdriver

Question

When testing forms, we can use either submit() or click() according to Selenium documentation. But when I use click(), the form submission hangs. Is there any diference that I should be aware of? Atleast logically because one of them is not working.

Answer 1

The submit() function is specifically for forms and makes things simpler. It can be used inside forms on elements, or form tags to submit that form.
Or else the obvious way is to use click() function after searching for that submit button.

So the only difference being: click() should be done on submit button and submit() can be done anywhere on the form element. The choice is yours.
http://docs.seleniumhq.org/docs/03_webdriver.jsp#user-input-filling-in-forms