Common Chinese 忌讳 include: giving clocks (送钟 sounds like 送终, attending a funeral), the number 4 (四 sounds like 死, death), and giving umbrellas (伞 sounds like 散, to part).
grammar
忌讳 can be a noun (一个忌讳 = a taboo) or a verb (忌讳说那件事 = to avoid mentioning that matter).
