The concept of keywords and keyword phrases seems simple on the surface, but when it comes to organic search engine optimization, it can get a bit tricky. A keyword or a keyword phrase is a descriptive word or a series of descriptive words that a person might type into a search engine in order to find a website that pertains to the particular word or words searched.
So how is it, you ask, that a search engine identifies these keywords or keyword phrases? Search engines work by matching up patterns. When you type in a word or a phrase into a search engine like Google, Google would look through portions of content in search of the particular keyword or keyword phrase. If you searched for the keyword “Labrador puppy” Google would view a paragraph on a website and the only words that would pop out as different would be “Labrador” and “puppy.” All of the other words would appear as plain text, no different from each other. If you tried searching “dog food” then Google would view the same paragraph this time with the words “dog” and food” popping out.
Google only sees the keyword or keyword phrase you are searching for. Search engine spiders look at where the keyword appears and how frequent the keyword’s appearance is on the particular site and then determines how pertinent or applicable the site is to the particular word or phrase.
Latent semantic indexing is a tool that is progressing at a fast pace. Latent semantic indexing is something that search engines use to determine whether certain words are related or not. This technology is still processing and until it is complete, the simple concept of keywords and keyword phrases will do when it comes to search engine optimization.