GOOGLE provide search services that correlated with the data in the real world, with Google services Correlate. Users can use the data from the database itself or correlated data provided by Google.
For example, influenza viruses are increasing in the United States in recent years. Users can search for terms such as colds or flu in the same pattern of influenza-related.
Search any word can be found based on time correlated and searches in the United States.
Other use, such as looking for correlations of the word work. Results of correlated appointment of other terms such as cover letters, sample, openings and resume cover letter.
Google Correlate can export words to the CSV file (Comma Separated Values), which is a set of file format used to store tabular data numbers, and text stored in plain text form.
To find more information and live access Google Blog Correlate.googlelabs.com.