Juxtaposition: noun
Definition: the act or an instance of placing two or more things side by side; also : the state of being so placed.
Source: http://www.merriam-webster.com/dictionary/juxtaposition
I found this word from my project#2 overlapping New York direction handout. This word is very important in my project#2 because I Need to use this word to describe the location.
Now, I understand this word: In the same place with different angle to observe, it will have different feel this is called juxtaposition.