Chain reactor and Nuclear reactor

Chain reactor noun - A nuclear reactor that uses controlled nuclear fission to generate energy.

Nuclear reactor and chain reactor are semantically related In some cases you can use "Nuclear reactor" instead a noun phrase "Chain reactor".

Nuclear reactor noun - (physics) any of several kinds of apparatus that maintain and control a nuclear reaction for the production of energy or artificial elements.

Chain reactor and nuclear reactor are semantically related in atomic reactor topic. You can use "Chain reactor" instead a noun phrase "Nuclear reactor".