density of the keywords is very important ... if you have a density well realted then you will appear in google SERPs ... very ranked prominence : don't forget that you'll need not to bold all keywords ... bold just 1-2-3 keywords per page hope this is usefull for you All the best
Keyword prominence means how close your main keywords are placed to the begining of text, it means your main keywords should be embedded in metatags as well as first heading, first paragraph of text, alt tag etc. Keyword density is also important and somehow holds greater priority over prominence, however both are needed to rank better. Have a nice day, Harsh