electron pair
In chemistry and physics, two electrons that are paired, such as in a covalent bond or a lone pair.
In a covalent bond, atoms share an electron pair.
Cooper pair
In superconductivity, a bound pair of electrons that move together. Named after Leon Cooper.
In the superconducting state, electrons form Cooper pairs (electron pairs).
クーパー対 is the more specific term for Cooper pair, often used in physics contexts. 電子対 can also refer to Cooper pairs in broader contexts.
Compound of 電子 (electron) and 対 (pair). A straightforward technical term.