Aeromechanics refers to the branch of mechanics that deals with the study of the motion of objects in the presence of air resistance. It is closely related to aerodynamics, which is the study of the properties of moving air, and thus, the study of aeromechanics often involves a combination of aerodynamics and mechanics. Synonyms for this word may include aerodynamics, fluid mechanics, and aeronautics. Other terms that are closely related to aeromechanics include flight mechanics, aerospace engineering, and aviation dynamics. These terms all refer to the study of the movement of objects in relation to air, and may be used interchangeably with the term aeromechanics.