For a given macrostate, he called the collection of all possible instantaneous microstates of a certain kind by the name monode, for which Gibbs' term ensemble is used nowadays. For single particle instantaneous microstates, Boltzmann called the collection an ergode.
For a given macrostate, he referred to the collection of all possible instantaneous microstates of a certain kind as monode, which is now commonly known as Gibbs' ensemble. For single-particle instantaneous microstates, Boltzmann used the term ergode.