The Chinese word "吠叫" is formed by combining two characters: "吠" and "叫". "吠" is constructed from the radical "口" (mouth) and the component "犬" (dog), directly indicating barking. "叫" is formed with the radical "口" (mouth) and the phonetic component "丩", meaning to shout. Together, they create a compound word where both characters contribute semantically to specify the act of barking, particularly for dogs.