Bricks are rectangular blocks that can be used to form parts of buildings, typically their walls and other elements in masonry construction. There are many different types of brick and these are categorized in various ways.
AAC Light Weight Bricks:

Autoclaved aerated concrete (AAC) is a lightweight, precast, foam concrete building material suitable for producing concrete masonry units like blocks. There are several advantages to AAC material such as thermal insulation, extreme fire resistance, compressive strength, and lightweight.

Fly Ash Bricks:

Fly ash bricks are a building component in civil engineering. The main ingredient of fly ash bricks is fly ash, and it comes from the thermal power plant. So, it doesn’t damage the environment again; that’s why it’s an environmentally friendly product. Fly ash bricks are cement-like in color, smooth, even surface, and uniform finish.

Solid Concrete Blocks:

Solid concrete blocks are one of the various types of precast concrete materials used in buildings. They’re good for creating walls that provide protection against the elements, such as strong winds. They can also be used for projects such as garden walls and planters, retaining walls, foundations, steps, firepits, and load-bearing & non-load-bearing walls.

Hollow Concrete Blocks:

Hollow blocks are specially made for load-bearing walls, which are useful in reducing a dead load of masonry in buildings. The holes make them lighter and can be useful when running wiring or piping through them. You can also run rebar through the holes for greater stability.