The synonym rapids, meaning fast-flowing water, is a fitting substitute for the word "buics". Another interchangeable term could be torrents, depicting a strong and vigorous stream. Rapids and torrents evoke a sense of energy and movement, mirroring the essence of "buics". Additionally, another synonym, cascades, exemplifies the descending and turbulent nature of this word. It portrays a series of small waterfalls, akin to the forceful rush associated with "buics". In summary, these synonyms capture the spirited, forceful, and powerful characteristics encompassed within the word "buics."