What is the best way to store information for a specific tile?

I have a tilemap where each different tile will have different strings attached to it, like a name string and a description string.

It would be nice to have instance variables attached to each tile but I don't think that's possible.

Should I have a dictionary or array store this information and match it to the tile or is there a better way to do this?

Thanks.

An array the would be my choice because it would be 1:1 with your tiles, making it easy to access the correct values.