Clyde William Tombaugh vs Tombaugh

Clyde William Tombaugh and Tombaugh both are nouns.

Word	Noun	Adjective	Verb	Adverb
Clyde William Tombaugh	Yes	No	No	No
Tombaugh	Yes	No	No	No

As nouns, Clyde William Tombaugh and Tombaugh are synonyms defined as:

Clyde William Tombaugh and Tombaugh: United States astronomer who discovered the planet Pluto (1906-1997)

Other synonyms of Clyde William Tombaugh include Clyde Tombaugh.

Clyde William Tombaugh (noun)	Tombaugh (noun)
United States astronomer who discovered the planet Pluto (1906-1997)	United States astronomer who discovered the planet Pluto (1906-1997)