Clark vs politician

Clark and politician both are nouns.

Word	Noun	Adjective	Verb	Adverb
Clark	Yes	No	No	No
politician	Yes	No	No	No

Clark (noun)	politician (noun)
Canadian politician who served as prime minister (1939-)	a person active in party politics
United States psychologist (born in Panama) whose research persuaded the Supreme Court that segregated schools were discriminatory (1914-2005)	a leader engaged in civil administration
United States general who was Allied commander in Africa and Italy in World War II and was commander of the United Nations forces in Korea (1896-1984)	a schemer who tries to gain advantage in an organization in sly or underhanded ways
United States explorer who (with Meriwether Lewis) led an expedition from St. Louis to the mouth of the Columbia River; Clark was responsible for making maps of the area (1770-1838)