Answer:
The Federalists believed that American foreign policy should favor British interests, while the Democratic-Republicans wanted to strengthen ties with the French. The Democratic-Republicans supported the government that had taken over France after the revolution of 1789.
Examples: Hamilton & Jefferson
Hamilton and the Federalists wanted a strong central government, run by well-educated property owners. Jefferson and the Democratic-Republicans wanted most power to stay with the states and wanted the farmers and the 'common man' to run the nation.
They were similar because with olfactory lethargy you have a delay in detecting a new smell because your receptors are overworked from a previously heavy smell, the same thing appear with afterimage, you stare at a color and your cones become lethargy, thus showing an afterimage of another color. they were contrasting because one deals with olfactory bulbs and the other deals with occipital lobes and optic nerves.