Keyword is main topic of any website.Any website content must be select after analysis of any website,when chose keyword,you need to chose low keyword,if your website is newly develop,otherwise chose high and medium keyword.

A keyword is either a word or a phrase that is entered into a search engine in order to find web page results that match the user's purpose, which may be to get information, to make a purchase, to be entertained, or something else. A keyword database is a collection of keywords that includes data about each keyword that helps webmasters and others understand a keyword's popularity and value. Some keyword databases provide only information on how frequently the keyword has been searched for in a given time period, while others provide more information.