mechanical
Machine, especially in opposition to an electronic item
Manufactured or artificial, especially in opposition to a biological or natural component
Automation, using machine decisions and processing instead of human
Mechanization, using machine labor instead of human or animal labor
HVAC (heating, ventilation, and air-conditioning), the mechanical systems of a building
Mechanical phenomenon, as in the mechanics of the Digestive Tract or the mechanics of swallowing
Mechanical license, used in the music industry to indicate the payment made from a licensee to the owner of a copyright for the right to mechanically reproduce a song