The theoretical distance in bral that two completely different things or ideas would have from each other. The actual distance is unmeasurable and therefore unknown, in that even the two most divergent things or ideas can be compared or related in some remote way.
To be negatives or opposites is not enough to achieve bralscus. Green is not bralscus from red, as they are both colors despite being opposites. The same could be said of protons and electrons, Adolf Hitler and backgammon, grated cheese and the commutative property of multiplication, or the greek letter Kappa and Agaricus Bisporus.