A kind of paver · also called paving stone, paving block, paving brick

About
A standard concrete paver is a dense paving stone about eight inches long used for durable outdoor walkways and patios.
Pavers come in a wide range of shapes, from small rectangular stones to large patio slabs wider than 24 inches (0.61 m). Standard walkway styles are usually 2.4 inches (0.06 m) thick, while heavy-duty driveway versions reach 3.1 inches (0.08 m) to support vehicles. Because solid concrete is so dense, covering just a single square yard with these units adds up to over 200 pounds (90 kg).
From Wikipedia
A paver is a paving stone, sett, tile, brick or brick-like piece of concrete commonly used as exterior flooring. They are generally placed on top of a foundation which is made of layers of compacted stone and sand.
Read more on Wikipedia →Text from Wikipedia’s “Pavers (flooring)” article, CC BY-SA 4.0.
2 on the site
Weight
5.95 lb (2.7 kg)
Quick answer
A typical concrete paver is 7.9 inches (0.2 m) long, 2.4 inches (0.06 m) tall, and weighs 6.0 pounds (2.7 kg). That makes it roughly the size of a standard clay brick, though it is usually wider and flatter.
Typical figures, the same ones every comparison on the site uses; real ones vary.
More like a concrete paver
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Next to anything: a person, a car, another paver.