25 Feb 11
22 Aug 12 8:20 am
Domain authority is a ranking factor in Google which measures a website/domain's authority by the number of credible sites linking back to it. Page Authority on the other hand is a measure of a page's likelihood to rank highly in the SERPs. The higher the Page Authority, the more like the page will rank highly in the SERPs.
Hope that helps. Have a good day!