What is the difference between "in-between" and "between"?

Do in-between and between have different meanings?
What is the difference between in-between and between?


Solution 1:

Well, between all by itself acts as a preposition, but in between functions as an adverb.

preposition: I found myself caught between a rock and a hard place.

adverb: There was a rock and a hard place, and there I was lying in between.