The child built a tower with a wooden block.

A solid piece of material with flat surfaces on each side, often used for construction or as a unit of measurement.
He held a large stone block.
The wall used a concrete block.
She painted a colorful block.
wooden block
concrete block
building block
cube
brick
chunk
We walked around the entire city block.

A section of a city or town, often characterized by a specific use or type of building.
The next block has a great bakery.
We live on this city block.
He owns the entire block.
city block
entire block
next block
area
district
neighborhood