Masonry and concrete are not the same thing; as a general rule masonry is referring to the bricks, stones, and blocks used while concrete refers to a type of cement, other materials, and water that can be set into large forms to make a building without the smaller units of stones or bricks stacked upon each other. It is important to note that individual blocks made of concrete are referred to as masonry or concrete masonry. Masonry may also refer to the skill or trade of working with stones and bricks to build exactly and artfully.
The type of concrete you want to choose depends on the area of the building it will be used and the scope of the project. The material that is used to mix with the cement in concrete as an aggregate will determine the hardness, water resistance, and weight of the concrete forms that are being made. You would not use the exact same formula to pour a foundation as you would to make a concrete brick form. It can be an exact science to get the needed results, but the experts have had many years of experience and can easily mix a batch of concrete suitable for whatever project is at hand.
The type of masonry you want to choose is a matter of taste and the integrity of the project. There are many types of mediums to choose from including brick, natural local stones, imported stones, marble, concrete block, smaller stone mediums and many more. It is important to hire a mason with experience and an eye for both the beauty of the project and also the integrity. When done right, building with stone can lead to a piece of architecture that stays sturdy and attractive for many years.
Whether you chose concrete masonry, poured concrete walls, or stone masonry, the integrity of your structure will likely be significantly better for choosing these fire resistant sturdy mediums to build with.