Hydromechanical is a term that refers to the combination of hydraulic and mechanical systems. There are several synonyms that can be used to describe the same concept. One of these synonyms is "fluid power", which encompasses the use of both hydraulic and pneumatic systems. Another synonym is "fluid mechanics", which focuses on the study of fluid behavior. "Hydraulic-machinery" is another synonym that emphasizes the mechanical aspects of hydraulics. "Hydraulics" by itself is also a synonym, as it refers to the use of liquids to create mechanical force. Ultimately, all of these terms describe the important intersection of fluid dynamics and mechanical engineering.