“Cognate (adjective): Related or common ancestry, as two words having the same derivation; descended from the same verbal root; intrinsically similar. Noun: cognate, cognateness.
‘The vulgarity of a lot of writing about food is cognate with the vulgarity of a lot of writing about sex.’ Anthony Burgess, The New York Times”
Excerpted from: Grambs, David. The Random House Dictionary for Writers and Readers. New York: Random House, 1990.