Definition of cognates:
(adj) :
(linguistics) Descended from the same source lexemes (same etymons) of an ancestor language.
(adj) :
Of the same or a similar nature; of the same family; proceeding from the same stock or root.
(n) :
One of a number of things allied in origin or nature.
(adj) :
Allied by blood; kindred by birth; specifically (law) related on the mother's side.
(n) :
(law, dated) One who is related to another on the female side.
(n) :
(law, dated) One who is related to another, both having descended from a common ancestor through legal marriages.