cognation

noun

1. (countable, uncountable)A cognate relationship.

   “[…] these stones, I say, gratifie our sight, as having a nearer cognation with the Soul of Man, that is Rational and Intellectual, and therefore is well pleased when it meets with any outward Object that fits and agrees with those congenite Ideas her own nature is furnished with.”

   “Cowan (1957a, 1957b) has established the following CVC cognation percentages using for his 'Tami Group' only the languages classed by the present writer as constituting the Upper Tami Families.”

   “This being the case, proof of cognation remains elusive even in the case of conspicuous lexical lookalikes.”