довершение

From LSJ

φιλοσοφώτερον καὶ σπουδαιότερον ποίησις ἱστορίας ἐστίν: ἡ μὲν γὰρ ποίησις μᾶλλον τὰ καθόλου, ἡ δ' ἱστορία τὰ καθ' ἕκαστον λέγει → poetry is something more scientific and serious than history, because poetry tends to give general truths while history gives particular facts

Source

Russian > Greek

παντέλεια, ἐξεργασία, συμπλήρωσις