What does parellell mean?

When something is Parellel it doesnt ever meet or touch. For Example : when you are doing math, and a question asks you "Which set of lines are parellel" you would look at that figure and see which one is not touched or has a amount of space in between . When you are talking about the five themes of geography, it means that they are either talking about the line of latitude or how the areas are seperated .