Whats the difference between a key lime pie and lemon meringue pie?

On his State of the Union speech in 1941, president Roosevelt mentioned the basic things that americans can expect from their political and economic systems. They are:

-Equal opportunities for the young and others

-Jobs for those who can work

-Security for those who need it

-Nobody can have special privileges

-Preservation of civil liberties for everybody

-Enjoyment of scientific progress and constant rise of standard of living