Compound Preposition
Compound Prepositions are the Prepositions formed by prefixing the Preposition to a Noun, an Adjective or an Adverb.
Compound Prepositions involve the following words:
Without (with + out), within (with + in), inside (in + side), outside (out + side), into (in + to), below (be + low), behind (be + hind), between, along, around, across, beyond, about, etc.
Distribute the chocolates “among” your friends.
She was standing “behind” the books.
The dog is sitting “beside” the chair.
There is nothing “inside” the basket.
She swimmed “across” the river.