HUA-4

('hua' in the fourth tone)

There are some 17 standard Chinese characters with a 'hua' pronunciation. In seven of them, 化 is the sound-indicating component.

话 = words, speech

普通话 = pu(3)tong(1)hua(4) = the common Chinese language, standard Mandarin Chinese

普通 = pu(3)tong(1) = common, ordinary