President Kennedy vs JFK

President Kennedy and JFK both are nouns.

Word	Noun	Adjective	Verb	Adverb
President Kennedy	Yes	No	No	No
JFK	Yes	No	No	No

As nouns, President Kennedy and JFK are synonyms defined as:

President Kennedy and JFK: 35th President of the United States; established the Peace Corps; assassinated in Dallas (1917-1963)

Other synonyms of President Kennedy include Jack Kennedy, John Fitzgerald Kennedy, Kennedy, President John F. Kennedy.

President Kennedy (noun)	JFK (noun)
35th President of the United States; established the Peace Corps; assassinated in Dallas (1917-1963)	35th President of the United States; established the Peace Corps; assassinated in Dallas (1917-1963)