Any type from either lexica or ontologies, which are not explicitly declared as tropes (i.e. as unary projections of a known frame). However, from the perspective of frame semantics, types are unary projections either, because their conceptualization depends on a (usually implicit) multigrade predicate. E.g. the 'Propeller' of a boat is a unary projection of a 'Boat Propelling' frame. This is a typical trope, but even 'Boat' (which is hardly considered a trope) can be a unary projection of e.g. a 'Boat Navigation' frame, be it explicit or not. In other words, the frame dependence of a semantic type is 'external' to the argument it is applied in a frame: FrameNet semantic types, VerbNet selectional restrictions, WordNet synsets, schema classes, are all unary projection of frames that are independent from the frame they can be used upon. For example, if I use wn:synset-boat-1 to type the theme role of a Shipyard frame, the main multigrade predicate for wn:synset-boat-1 is still Boat Navigation. On the contrary, Propeller is typically applied to the Boat Propelling frame.