A-RE versus SO-RE
What is the difference between A-RE and SO-RE? They both mean "that one" but when do you use one instead of the other? Thank you.
KOre - This one (close to the speaker)
SOre - That one (close to the listener)
Are - That one over there (far away from listener and speaker)
You might be interested in reading this article. It goes into much greater detail.
The difference is to do with the distance.
If you are talking about something close you (as in, that is my cup) would use 'sore'. Example: "sore wa watashi no kappu desu"
If it is something further way (that is my car over there), you would use 'are'. Example: "are wa watashi no kuruma adesu"
'Are' can also be used for a thing in both the speaker and listener's minds. For example, both people are talking about a teacher but he or she isn't there, so you should use 'are' over 'kore' or 'ano' in this context.