A snow-capped mountain is to a crocodile as a cactus is to a starfish. This relationship shows an opposition. The crocodile does NOT belong on the mountain; the starfish does NOT belong in the desert.

Sheep are to sweater as pine trees are to log cabin. Wool comes from the sheep to make a sweater; wood comes from the trees to make the log cabin.

An oar is to a canoe as a steering wheel is to a car. This is a functional relationship. The oar helps steer the canoe in the way that the steering wheel steers the car.

A penny is to a dollar as a small house is to a skyscraper. This relationship shows smaller to larger. A penny is much smaller than a dollar; a house is much smaller than a skyscraper.

A fish is to a dragonfly as a chicken is to corn. Fish eat insects; chickens eat corn.