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.
In his work, he designated the gathering of all feasible instantaneous microstates for a specific macrostate as monode, a term now largely replaced by Gibbs' ensemble. He also employed the term ergode to describe the collection of single-particle instantaneous microstates.