President John Quincy Adams vs President Adams

President John Quincy Adams and President Adams both are nouns.

Word	Noun	Adjective	Verb	Adverb
President John Quincy Adams	Yes	No	No	No
President Adams	Yes	No	No	No

As nouns, President John Quincy Adams and President Adams are synonyms defined as:

President John Quincy Adams and President Adams: 6th President of the United States; son of John Adams (1767-1848)

Other synonyms of President John Quincy Adams include Adams, John Quincy Adams.

President John Quincy Adams (noun)	President Adams (noun)
6th President of the United States; son of John Adams (1767-1848)	2nd President of the United States (1735-1826)
	6th President of the United States; son of John Adams (1767-1848)