President of the United States vs President

President of the United States and President both are nouns.

Word	Noun	Adjective	Verb	Adverb
President of the United States	Yes	No	No	No
President	Yes	No	No	No

As nouns, President of the United States and President are synonyms defined as:

President of the United States and President: the office of the United States head of state

Other synonyms of President of the United States include Chief Executive.

As nouns, President of the United States and President are synonyms defined as:

President of the United States and President: the person who holds the office of head of state of the United States government

Other synonyms of President of the United States include Chief Executive, United States President.

President of the United States (noun)	President (noun)
the office of the United States head of state	the office of the United States head of state
the person who holds the office of head of state of the United States government	the person who holds the office of head of state of the United States government