 On the grounding-based characterization of fundamentality, the fundamentalia are ungrounded entities: everything is either ungrounded or ultimately grounded in the fundamental, ungrounded entities (Schaffer 2009: 353; Audi 2012: 710; Dasgupta 2014a: 536; Raven 2016: 613). For instance, Audi (2012: 710) explicitly distinguishes between the explanatorily fundamental and the compositionally fundamental where the first is associated with grounding and the second with mereological dependence. As Audi correctly notes, one would think that often these two notions of fundamentality would overlap. But recall that we’ve just observed that the converse of mereological dependence, running from the smaller to the larger, could hold. For the priority monist, this dependence relation running from the smaller to the larger is grounding, so it would also produce a different understanding of fundamentality.