con

In the study of words of this class, we learn by con trast, which is one of the most powerful modes of impressing thought. Everywhere in nature, we see things that are opposite—the land, the sea, the lake, the island, the mountain, the valley, growth, decay, etc. The attention of the pupil may be directed to this fact; so that, while studying the words that denote contrast, the distinctions may be more vividly impressed by considering the things which they indicate. This is often the best kind of object teaching.