As a search engine, Google offers a comprehensive database of keyword searches that can be used by internet marketers and online businesses. These keywords are crucial for search engine optimization (SEO) since they are useful in predicting consumer trends.

On the other hand, the most searched celebrities, movies, and scandals are interesting subjects of sociological, political and psychological studies. Google has recently released its list of most searched keywords for the year 2015.

For many people, using Google search engine to search for news is depressing to some extent. Many of the news tend to be very negative such as stories about terrorist attacks and environmental degradations.

Nonetheless, despite the negative news headlines, there are still some things in the news that can make people smile. Some that can be found through Google search are still optimistic like the pay-it-forward cafes in some places.

Many of the popular searches on Google in 2015 were still related to consumer high-end products such as smartphones, celebrities and scandals. Some of these most popular searches are expected but there are others that are surprising.

Political and current event searches typically peak during election season and if there are tragic global event such as terrorist attacks.

In terms of tech-related searches, the following are the top ten searches:

Apple iPhone 6s

Samsung Galaxy S6

Apple Watch

Apple iPad Pro

LG G4

Samsung Galaxy Note 5

Samsung Galaxy J5

HTC One M9

Google's Nexus 6P

Microsoft's Surface Pro 4

If all categories are lumped together, the following search items turned out to be the greatest in popularity in 2015:

Lamar Odom

Jurassic World

American Sniper

Caitlyn Jenner

Ronda Rousey

Paris

Agar.io

Chris Kyle

Fallout 4

Straight Outta Compton