化 is 'change' or '-ize'
花 Huā is 'flower'.
华 Huá is 'magnificent; Chinese'. Traditional Character: 華
货 Huò is 'goods'
Common words including these characters are:
化妆 huàzhuāng 'put on makeup'
花园 huāyuán 'garden'
华侨 huáqiáo 'overseas Chinese'
货车 huòchē 'truck' (not to be confused with 火车 huǒchē 'train')