ἀκμὴ οὐδὲ ἔχει γενέσεως ὑπόστασιν καθ' ἑαυτήν → the culmination has no power of originating by itself
ἄγκος, κοῖλον, γύαλον, κοιλάς, συνάγκεια, βῆσσα, βᾶσσα, αὐλών