Dipper vs Little Dipper

Dipper and Little Dipper both are nouns.

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

As nouns, Dipper and Little Dipper are synonyms defined as:

Dipper and Little Dipper: a cluster of seven stars in Ursa Minor; at the end of the dipper's handle is Polaris

Dipper (noun)	Little Dipper (noun)
a group of seven bright stars in the constellation Ursa Major	a cluster of seven stars in Ursa Minor; at the end of the dipper's handle is Polaris
a cluster of seven stars in Ursa Minor; at the end of the dipper's handle is Polaris