I searched the differences between these three words, but was still confused. Can anyone use examples to explain the differences between them?<br/><br/>Here are two examples searched from the Internet, which might be good or not so good use of them:<br/><br/><a href='http://www.ifma.org/about_ifma/strategic_plan/vision.cfm' target='_blank' rel='nofollow'>http://www.ifma.org/about_ifma/strategic_plan/vision.cfm</a><br/><span class='_lnk_exp' title='This link has since expired, or the site is not allowing us to check the link'>http://nursing.web.mtsu.edu/FACES/purpose.htm</span>