your title: ->几"组"近义词 would make a lot more sense, 组 means "sets". 桶/戳: this set makes no sense whatsoever. 贯彻/实施/实行: 1 is used more in a political setting. You can hear it in news reporting what the gov have been doing. Strangely enough it's most associated with Chinese government actions, my hypothesis is that it implies "volitional". 2: could be used in political setting interchangeably as 1, "carry out policies". or, you can use it to describe "performing illicit doings", as in 实施暴行/实施诈骗过程。also you can say 实施素质教育/实施改革 , which would imply "doing things in this fashion". 3: some people use it interchangeably with实践，as in （把承诺）付诸实践/付诸实行. also, 实行xx制度（e.g.实行九年制义务教育；这个公司实行股份制），实行（xxx的）措施is used, as 3 contained meaning further than just "doing", it's also "realizing". in some cases 3 is the same as 1 and 2. 急促/短促: describing very brief, short, RUSHING sound: 1=2. However, 2 is used almost exclusively for sounds/breaths/sounds (e.g.电话铃声), while 1 can be used to describe pace. 急促的旋律 is correct, 短促的旋律is wrong. 隐藏/隐瞒: 2 is used exclusively for information/news. 隐瞒+情报/私情/内情/错误/真相/秘密。1 can be used on abstract and tangible objects alike. 草率/粗率：similar. 2 contains more "rough handling", “artistic style that's unrefined”and "personality traits". You can never say a person is 草率的 （1 is a word only for actions, decisions, the manner of doing things， etc.) 1 is more common than 2, since there's so many words in mandarin that can replace 2.

As many synonyms in English, words in each group you listed have similar meanings, but not the same. Subtle meanings of words in Chinese are rather challenging to explain. Take the first group of words as an example. “捅” normally means stabbed with obvious wounds or openings, whereas “戳” can be used under the circumstances of with or without wounds or openings — also, the word “戳” normally only involves in situations with shape objects.