There is a commonality in terms of energy conversion. Windmills convert wind energy into mechanical energy. The energy generated is used to do something useful like turn an electrical generator or run a water pump. Motor proteins do something like this in that they take the chemical energy from ATP and convert it into the mechanical motion of muscle proteins such as myosin.
METAMIA is a free database of analogy and metaphor. Anyone can contribute or search. The subject matter can be anything. Science is popular, but poetry is encouraged. The goal is to integrate our fluid muses with the stark literalism of a relational database. Metamia is like a girdle for your muses, a cognitive girdle.