Google APIs are application programming interfaces developed by Google which allow communication with Google Services and their integration to other services.
Website using the € symbol on their website - meaning it may accept payment in Euros.
The http-equiv attribute provides an HTTP header for the information/value of the content attribute. The http-equiv attribute can be used to simulate an HTTP response header.
Meta Keywords are a specific type of meta tag that appear in the HTML code of a Web page and help tell search engines what the topic of the page is.