A blog, short for We
bLog, is sort of like an online journal. It could be used for many things - talking about your day, or talking about a certain issue. Some people have a few blogs - one about a project, one for their personal stuff, etc.
#Portal is a Content Management System (CMS). I'll quote this website:
http://www.steptwo.com.au/papers/kmc_what/ for a good definition of a CMS:
A content management system (CMS) supports the creation, management, distribution, publishing, and discovery of corporate information.
It covers the complete lifecycle of the pages on your site, from providing simple tools to create the content, through to publishing, and finally to archiving.
It also provides the ability to manage the structure of the site, the appearance of the published pages, and the navigation provided to the users.
Note that we are focusing on the most common use of a CMS: to manage web content. In some circles, these systems are therefore called web management systems (WMS).
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