radio; CL:臺|台[tai2]
收 · 6 strokes
Phonosemantic compound. 攵 represents the meaning and 丩 represents the sound.
音 · 9 strokes
Originally the same as 言 (speech) but with an extra line added in the mouth (口) to distinguish the two characters.
机 · 6 strokes
Simplified form of 機. Phonosemantic compound. 木 represents the meaning and 几 represents the sound.