Keyword Destiny Checker Tools:
Keyword Density is the percentage of occurrence of your keywords to the text in the rest of your webpage.
It is important for your main keywords to have the correct keyword density to rank well in Search Engines.
Keyword Destiny Checker Tools:
Keyword Cloud is a visual depiction of keywords used on a website, keywords having higer density are depicted in a larger fonts.
Ideally your main keywords should appear in larger fonts at the start of the cloud.