prepositionnoun
Prepositionnoun is a hypothetical or fictional linguistic concept that does not exist in standard English grammar. The term itself suggests a combination of a preposition and a noun, but such a distinct grammatical category is not recognized. Prepositions, such as "in," "on," "at," "to," "from," "with," and "by," are words that typically precede a noun or pronoun (called the object of the preposition) to indicate relationships of location, direction, time, or manner. For example, in the phrase "the book on the table," "on" is the preposition and "the table" is its object.
The idea of a "prepositionnoun" might arise from a misunderstanding of how prepositions function within phrases.