It's purpose is to promote the "Make A Difference Day" program which encourages people to make a difference, together! It has been used as a tool to make announcement, create instructions, promote awareness and calls for an action to be done in relation to the programs vision.
Allusion is the type of figurative language used here, I believe.
Nose:smell:tongue:taste
Bird:chirp:cow:moo
Bed:sleeping:chair:sitting
Chihuahua:dog:eagle:bird
Hope this helps... not sure about the second one. All other I’m sure are correct.
The answer to your question is theme
