In this topic you study, the difference between machine and structure.
| Comparative Point | Machine | Structure |
| Relative motion | Links or parts of machine have relative motion with respect to one another. | Members of structure do not have any relative motion with respect to one another. |
| Type of energy transferred | Transformation of both, forces and motion is possible. | Only forces are transformed. |
| Mechanism | Links of machine are meant to transmit both power and motion. | Members of structure are meant for carrying loads subjected to straining action. |
| Energy conversion | Machine can transform the available energy in useful form of work (energy). | There is no energy conversion in structures. |
| Applications | Screw jack, Lathe, Electric motor etc. | Transmission towers, Railway bridges, Platforms, Roof trusses, Machine frame etc. |
| Degree of freedom | Degree of freedom is one or more than one. | Degree of freedom is zero or negative. |
| Study | It is studied under dynamics | It is studied under statics |