can you give some examples of portlets in Liferay CMS and WCM areas?

The following portlets are part of the Content Management System (CMS) of Liferay Portal:
‹‹

•  Document library portlet
• ‹‹ Document library display portlet
• ‹‹ Image gallery portlet

The following portlets take care of Web Content Management (WCM) in Liferay Portal:
‹‹

•  Web content portlet
• ‹‹ Web content display portlet
• ‹‹ Web content list portlet
• ‹‹ Web content search portlet