physicist vs Townes

physicist and Townes both are nouns.

Word	Noun	Adjective	Verb	Adverb
physicist	Yes	No	No	No
Townes	Yes	No	No	No

As nouns, Townes is a hyponym of physicist; that is, Townes is a word with a more specific, narrower meaning than physicist:

physicist: a scientist trained in physics
Townes: United States physicist who developed the laser and maser principles for producing high-intensity radiation (1915-)

physicist (noun)	Townes (noun)
a scientist trained in physics	United States physicist who developed the laser and maser principles for producing high-intensity radiation (1915-)