West vs Rebecca West

West and Rebecca West both are nouns.

Word	Noun	Adjective	Verb	Adverb
West	Yes	No	No	No
Rebecca West	Yes	No	No	No

As nouns, West and Rebecca West are synonyms defined as:

Other synonyms of West include Cicily Isabel Fairfield, Dame Rebecca West.

West (noun)	Rebecca West (noun)
the countries of (originally) Europe and (now including) North America and South America	British writer (born in Ireland) (1892-1983)
the region of the United States lying to the west of the Mississippi River
English painter (born in America) who became the second president of the Royal Academy (1738-1820)
United States film actress (1892-1980)
British writer (born in Ireland) (1892-1983)