Glossary
Content type - is a type of information you want to store in your website. Events, pages, products, are content types.
Node - is a single entry in your website. I could be a page, a event, a product, ...
Taxonomy - is used to categorize nodes in your website.
For example in fig.1 there is a taxonomy category called Community. This page has two tags, Community Hall, and Fees. You can have multiple tags on each page as long as they are separated with a comma ( , ). Now this page has a common link with all the pages in the site that are also tagged with either Community Hall, or Fees.
(fig.1)

Weights - are used to order nodes in a list, or menu items in a menu block.