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