 The question of interchangeability becomes interesting when “brute” and “fundamental” are used with different meanings. Thus, for instance, the question of whether a fundamental qua ungrounded fact can fail to be brute qua lacking a metaphysical explanation is interesting (McKenzie’s (2017) aim is to argue for a positive answer to this question). However, in this case, as presumably in all the other possible cases of interest, the use of the labels “brute” and “fundamental” is immaterial because the question can be rephrased using only their respective definientia (the previous question, for instance, can be rephrased as the question whether an ungrounded fact can be metaphysically explained).