Whatwhich
Whatwhat is a term used in discussions of English interrogatives to describe a hybrid or nonstandard class of questions that blend the what and which elements. The term is not part of formal grammar, but it appears in informal or pedagogical contexts to name instances where the distinction between what (open-ended) and which (restricted) is blurred.
Whatwhich is typically associated with learner language, translation artifacts, or exploratory analyses in linguistics. In standard
As a descriptive label, whatwhat serves to examine how wh-phrases encode information structure, scope, and selects
Wh-questions, What-questions, Which-questions, Language acquisition, Natural language processing.