Parechēsis (παρήχησις likeness of sound) is the repetition of the same sound in words in close or immediate succession. Alliteration is initial rhyme.
ἄγαμος, ἄτεκνος, ἄπολις, ἄφιλος I. T. 220 (cp. “unwept, unhonoured, and unsung”), πόνος πόνῳ πόνον φέρει toil upon toil brings only toil Aj. 866, τυφλὸς τά τ᾽ ὦτα τόν τε νοῦν τά τ᾽ ὄμματ᾽ εἶ
blind art thou in thy ears, thy reason, and thy eyes O. T. 371, οἱ οὐδὲ . . . δὶς ἀποθανόντες δίκην δοῦναι δύναιντ᾽ ἄν
who would not be able to give satisfaction even by dying twice 12.37, ἔσωσά σ᾽· ὡς ἴσᾱσιν Ἑλλήνων ὅσοι κτλ. I saved thee; as all of the Greeks know who, etc. Med. 476, θανάτου θᾶττον θεῖ wickedness ‘fleeth faster than fate’ A. 39a.