In keyword research, You have to decide that on what keyword your site should be displayed in the search result. Like, if i am having a book selling site then i would prefer book as a keyword. Just like that according to your site you have to decide your keyword.
Primary Keyword : It’s also called as a main keyword. Note :- The primary keywords are always less than the secondary.
Secondary Keyword : It’s a type of keyword which uses primary keyword but not alone, it must have some other words to mix with the primary keyword. Like, Horror Book, Picture Book, Story Book. This all are the secondary keywords
How to make keyword research will be discussed in next Article. So, Keep reading.