concentration
From LSJ
οὗτος ἐγὼ ταχυτᾶτι· χεῖρες δὲ καὶ ἦτορ ἴσο → this is my speed: my hands and heart are its equal, such am I for speed; my hands and heart are just as good
collection: P. and V. συλλογή, ἡ, ἄθροισις, ἡ.
attention: P. and V. ἐπιστροφή, ή.