The National Labor Relations Board (NLRB) is a federal agency responsible for enforcing workplace regulations and protecting employees' rights to organize and form unions. There are a few synonyms for NLRB that can be used interchangeably. For instance, the Labor Board, the National Labor Board, and the Federal Labor Relations Authority can all be used to refer to the NLRB. However, it is worth noting that there are some subtle differences between these agencies and their functions. Therefore, it is essential to use the right term in a specific context to avoid confusion. When in doubt, NLRB is the most prevalent and widely recognized term.