Yes, prepositions are one of the types of structural words.
Explanation: Structural words are words that help structure sentences and connect other words together to convey meaning. They include:
Prepositions (e.g., in, on, at, by, with)
Articles (e.g., the, a, an)
Conjunctions (e.g., and, but, or, because)
Pronouns (e.g., he, she, they, it)
These words do not carry significant meaning by themselves but are essential for constructing grammatical sentences and expressing relationships between other words. Prepositions, for example, show relationships in time, place, direction, etc., such as in "on the table" or "at school."
