It's the keywords or phrases that are searched by the people when they are looking for the required information.. you can move with google adwords tool..
Depend on keywords that are searched by searchers. there are many tools available to check keywords popularity.
Not exactly. Even if they often coincide, search terms may be longer. For example, one could search for "Where to find good shoes in Alaska," whereas the keywords associated with such an inquiry would probably be "shoes," "Alaska," "buy shoes," etc. Search term popularity results are better targeted than keyword popularity results.
One of the first and most obvious types of data we want a search term is just how popular it is with searchers. This is important for all search engine marketers, whether they are working on SEO or PPC campaigns. Unfortunately, when it comes to keyword popularity, the data that is available can be hard to trust. Today, I’ll walk through the main search term databases that are available today, and discuss the specific pros and cons of each one. All search term databases are affected by a certain amount of skew. The main problem is rank checking applications like WebPosition, which submit automated queries to multiple search engines for large lists of search terms. Every time someone checks their rankings (even by searching manually), it inflates the count for that search term at that search engine… and sometimes at others as well.
Choosing the right keywords is really crucial for a success of your online business. If you target the wrong keywords it will be really hard for you to get targeted traffic that you desire from the search engines.