Anglesea Island vs Anglesea

Anglesea Island and Anglesea both are nouns.

Word	Noun	Adjective	Verb	Adverb
Anglesea Island	Yes	No	No	No
Anglesea	Yes	No	No	No

As nouns, Anglesea Island and Anglesea are synonyms defined as:

Other synonyms of Anglesea Island include Anglesey, Anglesey Island, Mona.

Anglesea Island (noun)	Anglesea (noun)
an island to the northwest of Wales	an island to the northwest of Wales