“…(Song, 2014, p. 348) This study concerns words that can appear as both adjectives and verbs, and we refer to these words as categorically ambiguous adjectives and verbs. The grammatical categories of these words have been investigated (e.g., Song, 1988;Koo, 2010Koo, , 2021Yang, 2015), with some researchers suggesting that they belong to two different categories listed under separate lexical entries with distinct "forms, " "functions, " and "meanings" (Koo, 2010;Yang, 2015; for English, see Jackendoff, 1976;Lieber, 1980).…”