| site structure | The planning and design of a websites functional, technical, and visual components. |
| meta data | Noun phrase. Secondary data stored in or collected about a Web document for the purpose of assisting in its classification, use, or interpretation. |
| link density | Noun phrase. The number of links embedded on a page computed in a ratio of links-per-words or distance-between linking elements. |
| h3 tag | The heading element in HTML defines a structure for headings in a document. Starting with H1 as the most important heading, descending to H6, heading tags have been a standard part of HTML since HTML 2.0. |
| tfidf | (Term frequency-inverse document frequency) A measurement used by Google to determine how important a keyword is on a webpage by comparing its frequency and usage on other webpages. |
