king vs David

king and David both are nouns.

Word	Noun	Adjective	Verb	Adverb
king	Yes	No	No	No
David	Yes	No	No	No

king (noun)	David (noun)
(chess) the weakest but the most important piece	(Old Testament) the 2nd king of the Israelites; as a young shepherd he fought Goliath (a giant Philistine warrior) and killed him by hitting him in the head with a stone flung from a sling; he united Israel with Jerusalem as its capital; many of the Psalms are attributed to David (circa 1000-962 BC)
one of the four playing cards in a deck bearing the picture of a king	French neoclassical painter who actively supported the French Revolution (1748-1825)
a checker that has been moved to the opponent's first row where it is promoted to a piece that is free to move either forward or backward	patron saint of Wales (circa 520-600)
a male sovereign; ruler of a kingdom
a very wealthy or powerful businessman
a male competitor who holds a preeminent position
the husband or widower of a queen
preeminence in a particular category or group or field