Использовать суффиксы префиксы к словам:To sail, to connect, to educate,to build,to create,friend,leader,fellow,dark,weak,cold,bright,free

To sail - sailor to connect - disconnect, connection, connector, connecting, connected to educate - education, educating, educated, educator to build -rebuild, building, builder to create - creator, creature, creating, created friend - friendship, friendly leader - mislead, (mis)leading, leadrership, leader fellow - fellowship dark - darkness, to darken, darkly weak - weakness, to weaken, weakly cold - coldness, coldly bright - brightness, to brighten, brightening, brightly free - freedom, freely