1isDispalyed() -> verifies the presence of a web element within the web page. 
2      		      If found -> true,   If not found ->  false	
3		      checks for the presence of all kinds of web elements available
4isEnabled()  -> verify if the web element is enabled or disabled within the 
5                web page.
6		       is primarily used with buttons
7isSelected()   -> verifies if the web element is selected or not
8		       is used with radio buttons, dropdowns and checkboxes.