Little Bear vs pole star

Little Bear and pole star both are nouns.

Word	Noun	Adjective	Verb	Adverb
Little Bear	Yes	No	No	No
pole star	Yes	No	No	No

Little Bear (noun)	pole star (noun)
a constellation outside the zodiac that rotates around the North Star, also known as the Little Bear or Little Dipper	the brightest star in Ursa Minor; at the end of the handle of the Little Dipper; the northern axis of the earth points toward it