“…Zero-derivation is observed when "one word can be derived from another word of the same form in a language (only) if there is a precise analogue in the language where the same derivational function is marked in the derived word by an overt (nonzero) form" (Sanders, 1988: 165), whereas conversion requires a modifying element. Functional transposition is also associated with the notions of transcategorization (Halliday & Matthiensen, 1999;Ježek & Ramat, 2009;He & Yang, 2014;Ramat, 2019), transcategoriality (Robert, 2005;Orlandini & Poccetti, 2014;Hancil, 2018), and recategorization (Dubinsky & Williams, 1995;Štekauer, 2005;Vea, 2015;Goethem & Koutsoukos, 2018); however, categorial changes illustrated by the phenomena enumerated above undoubtedly describe word-formation processes to which functional transposition does not belong, because it does not form new lexical units, but transposes lexical units from one category to another, and make them function as its representative. The theory of functional transposition follows and modifies the idea of the classical triad 'meaning-form-function,' which is supposed to differentiate between word classes.…”