кровное родство

From LSJ

οὔ τι τὰ πολλὰ ἔπη φρονίμην ἀπεφήνατο δόξαν → a multitude of words is no proof of a prudent mind, many words do not declare an understanding heart

Source

Russian > Greek

αἷμα, ἀναγκαιότης, ὁμαιμοσύνη, ὁμαιμότης