President John Adams vs President Adams

President John Adams and President Adams both are nouns.

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

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

President John Adams and President Adams: 2nd President of the United States (1735-1826)

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

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