The word lithium is from the Greek word lithos (stone).  The word was chosen because lithium was discovered in a mineral, unlike other alkali metals that were discovered in plants. 

Beyond its primary use in lithium-ion batteries, lithium is also used in various industrial applications including: creating heat-resistant glass and ceramics, producing specialized lubricants (lithium grease), acting as a flux additive in metal production (iron, steel, aluminum), and as a component in certain alloys used in aircraft parts due to its lightweight properties; additionally, lithium compounds are used in some medications as a mood stabilizer for conditions like bipolar disorder. 

Just the facts:

Lithium Definition & Meaning - Merriam-Webster

That is a huge word here in Nevada

McDermitt Caldera, straddling the border of Oregon and Nevada, may hold 20 to 40 million metric tons of extractable lithium, which would make it the largest known lithium deposit in the world!