ковък означава в английски

ductile▼(capable of being pulled or stretched into thin wire)
adjective
[UK: ˈdʌk.taɪl] [US: ˈdʌk.təl]

malleable▼(able to be hammered into thin sheets)
adjective
[UK: ˈmæ.lɪəb.l̩] [US: ˈmæ.liəb.l̩]

pliable▼(easily bent or formed)
adjective
[UK: ˈplaɪəb.l̩] [US: ˈplaɪəb.l̩]