召 召 zhào Strokes5 Radical 口 — mouth Made of 刀 knife 口 mouth How it's builtPhono-semantic — one part hints at the meaning, another at the sound Play the animation More about the character 召
开 开 kāi Strokes4 Radical 廾 — two hands Made of 一 one 廾 two hands How it's builtIdeograph — the meaning is built from its parts Play the animation