Homonym: resistance (Opposition)
Resistance refers to the opposition to the flow of electric current in a circuit. It is measured in ohms and is a key concept in electrical engineering. Materials that resist current flow, like rubber or wood, are called insulators, while those that allow current to flow easily, like copper or aluminum, are called conductors.
In a broader context, resistance can also describe the ability of a system or organism to withstand external forces or changes. For example, bacteria can develop resistance to antibiotics, making it harder to treat infections. This concept is important in fields like medicine and ecology.