Tidal motion refers to the cycle of rising and falling ocean tides that occur as a result of the gravitational pull of the moon and the sun. Synonyms for this term include tidal fluctuation, tidal variation, tidal rise and fall, tidal ebb and flow, tide oscillation, and tidal surge. These alternate terms all describe the same phenomenon of the movement of water in response to celestial bodies, but may offer different connotations or emphasis. Additionally, using a variety of synonyms can help add variety to written texts and ensure that readers don't become bored with repeated language.