Little Bear vs Ursa Minor

Little Bear and Ursa Minor both are nouns.

Word	Noun	Adjective	Verb	Adverb
Little Bear	Yes	No	No	No
Ursa Minor	Yes	No	No	No

As nouns, Little Bear and Ursa Minor are synonyms defined as:

Little Bear and Ursa Minor: a constellation outside the zodiac that rotates around the North Star, also known as the Little Bear or Little Dipper

Little Bear (noun)	Ursa Minor (noun)
a constellation outside the zodiac that rotates around the North Star, also known as the Little Bear or Little Dipper	a constellation outside the zodiac that rotates around the North Star, also known as the Little Bear or Little Dipper