心 Heart (Radical 61)

Radicals organize the chaotic swarm of characters into a logical system. Traditional Chinese groups all characters according to 214 radicals (simplified uses 189), which are organized based on the number of strokes into a chart called the bushou. Each radical is itself a freestanding character/word, such as one, woman, child, cliff, field, tree, millet, halberd, leather and bird.