The term rank of A is the minimum number of lines (rows and columns) needed to include all nonzero entries of A.
Further, if S is an antinegative semiring then the term rank is a monotone function; that is, if A [less than or equal to] B then t(A) [less than or equal to] t(B).
Note how karycnevy `brown' again appears at the bottom of this ranking, but, unlike the frequency measure, there are grounds for including it along with the other putative basic terms, as it is close to the term ranked
above it (sery `gray') but sharply divided from the term ranked
below it (aranzavy `orange').