My word is Marble.

Mind Map

Mind map of Marble

Top left is some of my own marbles (toothpaste).
Top right is George Rhoads Rolling ball sculpture (Kinetic art).
Below are screenshots of google searches of marble run, race, marbles, game.

Marble patterns from Pinterest.

I searched for marble on Pinterest and further searched for marble nails and marble kitchens.

Marble quarries in the Apuan Alps, Tuscany, Italy. The marble industry has a bad environmental impact on the Apuan Alps. Locals and refugees are reclaiming the mountains to close down quarries and replacing them with an alternative economy, They organised rallies, petitions and flash mobs and as result two quarries were closed down.

Statues (from left to right)
Winged Victory of Samothrace, Venus de Milo and David by Michelangelo.

Artists
Michelangelo and Donatello

Architecture (left to right)
Taj Mahal, Washington Monument and Lincoln Memorial.