The word masonry refers both to the process of building things out of stone or brick and to the structures that result from this process. To practice masonry, you have to be strong enough to lift very heavy rocks.
Some masonry experts (called masons) essentially "glue" bricks together with mortar, making walls, outdoor stoves, or walking paths. You can also call a person who does this a bricklayer. Other masonry is made with concrete blocks, granite, or large stones. Dry stone walls are a type of masonry constructed with no mortar—the stones are shaped and arranged so that they fit together securely.