言 (Say) vs 話 (Talk) vs 読 (Read) vs 買 (Buy)
Words (言) + tongue (舌) = Talk (話), while Words (言) + sell (売) = Read (読)!
5-Second Radical Distinction Rule: 言 (sound waves rising from a mouth = Say) • 話 (words 言 + singing cat's tongue 舌 = Talk) • 読 (words 言 + sell 売 = Read) • 買 (net 罒 + shell money 貝 = Buy).