Semantics
Semantics was a branch of linguistics that focused on the meaning of words and phrases.
Semantics was a field of study in which Ensign Sonya Gomez believed that Jean-Luc Picard was knowledgeable. When Wesley Crusher was wondering what he might talk to the captain about on their long shuttlecraft journey to Starbase 515, Gomez suggested it as an interesting topic of conversation. (TNG: "Samaritan Snare")
In 2369, Ilon Tandro dismissed the fact that the warrant issued for "Dax" applied to Curzon Dax, not Jadzia Dax as semantics. (DS9: "Dax")
In 2372, Neelix had no use for Tuvok's semantics when the Vulcan rebuffed the Talaxian's enthusiasm and observations on his character. (VOY: "Tuvix")
Around 3074, a simulated Kathryn Janeway saw little difference between defeat and genocide. (VOY: "Living Witness")
In 3190, after Michael Burnham suggested that Cleveland Booker was not trying to harm them, but keep them away, D. Nhan felt the semantics of his actions were less important than the fact that he was firing on them. (DIS: "Rubicon")
Later that year, T'Rina wondered how hydrocarbons could contain a language, with the accompanying emotions and semantics. (DIS: "Species Ten-C")