a.

1. 同族的；同源的

n.

1. 同源詞，同根詞；同系語言
2. 同族

adj.

1. Linguistics  (of a word) having the same linguistic derivation as another (e.g. English father, German Vater, Latin pater).
2. formal related; connected.
   ▸related to or descended from a common ancestor. Compare with agnate.

n.

1. Linguistics  a cognate word.
2. Law  a blood relative, especially on the mother's side.