Construction is a broad term meaning the science and art of forming materials, systems, or people, and it comes in both Latin and Old English. To build is also the verb: to make, and the adequately defined noun is construction: the nature of the substance of what is being made, whether it is something physical (such as food) or something abstract (such as a building). From this, it follows that construction has meanings that can be associated with different kinds of things. Physical things can be constructed from matter (e.g., ship engines), whereas abstract things can be constructed from thought-forms (e.g., music). Therefore, we see that construction has both physical and mental meanings.