H
Headings
HTML tags, important to have it taken into consideration since search engines give the text in it extra weight which helps improve rankings.
Hidden Text
Text on web page that is hidden to human visitors but seen by search engines using the same background color for text color, this is considered Spam by search engines which cloud lead your websites to become banned.
HTML
Hyper Text Markup Language for the creation of websites.
I
Inbound Link
Hypertext link to a page from another website, it helps in increasing link popularity for such website.
IP Address
Indicates identity of a computer on Internet.
JavaScript
Script language
K
Keyword
Word found within search results.
Keyword Density
Ratio of the specific keyword compared to the total amount of words in a page.
Keyword Prominence
How close to the top of your page where keyword appears.This could be helpful to your search rankings since search engines consider it a relevant factor.