politician vs Clark

politician and Clark both are nouns.

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

politician (noun)	Clark (noun)
a person active in party politics	Canadian politician who served as prime minister (1939-)
a leader engaged in civil administration	United States psychologist (born in Panama) whose research persuaded the Supreme Court that segregated schools were discriminatory (1914-2005)
a schemer who tries to gain advantage in an organization in sly or underhanded ways	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)
	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)