гребень

From LSJ

ἀκμὴ οὐδὲ ἔχει γενέσεως ὑπόστασιν καθ' ἑαυτήν → the culmination has no power of originating by itself

Source

Russian > Greek

ὄχθη, κτείς, κτενός, τένων, ῥάχις, λόφος, ὀφρύς