Little Dipper vs Little Bear

Little Dipper and Little Bear both are nouns.

Word	Noun	Adjective	Verb	Adverb
Little Dipper	Yes	No	No	No
Little Bear	Yes	No	No	No

Little Dipper (noun)	Little Bear (noun)
a cluster of seven stars in Ursa Minor; at the end of the dipper's handle is Polaris	a constellation outside the zodiac that rotates around the North Star, also known as the Little Bear or Little Dipper