Google has a lot of features that users don't really use or are unknown to them.

Now, it's time to look at five of these overlooked but truly useful features.

Users who fancy travelling to different parts of the world can take some of the stress out of travelling by accessing Google Flight Search.

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It's a Google feature that allows users to easily spot airline flights with the cheapest tickets.

Go to https://www.google.com/flights/.

Pick a destination on the map then pick the date for the flight.

Google Flight Search allows users to filter results by flight length, airline, price and stops, said Fox News.

On the other hand, users that want information on the U.S. government could try Google Public Data Explorer.

Go to https://www.google.com/publicdata/directory/.

There they can see easy to read graphs they can access based on gender, age and state.

For mothers, there's the Google Conversions help them convert units of measurements.

Google Conversions easily converts measurements from ounces to cups to kilometers to miles.

Just type your conversion question on the Google Search Bar.

Bookworms and Grammar Nazis can try Google nGrams.

Go to https://books.google.com/ngrams.

Google nGrams is a tool that allows users to see how many times specific words occur in books dating back to the 1800s.

Users can see what words became less powerful over time.

Google nGrams allows user to compare words by using a comma. It allows users to adjust time period and book languages.

For stargazers and science enthusiasts, there's Google sky that allows users to see images of stars, planets and galaxies taken from telescopes, probes and satellites.

Go to http://www.google.com/sky/.

Google also made it a point to include infrared images and historic maps of stars created by Giovanni Domenico Cassini, the 18^th century astronomer and engineer.

Cassini's most notable feat in astronomy was discovering four moons of Saturn and the division of the rings of Saturn. The latter discovery led the Cassini Division of Saturn's rings to be named after him.