Bean Town vs Boston

Bean Town and Boston both are nouns.

Word	Noun	Adjective	Verb	Adverb
Bean Town	Yes	No	No	No
Boston	Yes	No	No	No

As nouns, Bean Town and Boston are synonyms defined as:

Bean Town and Boston: state capital and largest city of Massachusetts; a major center for banking and financial services

Other synonyms of Bean Town include Beantown, capital of Massachusetts, Hub of the Universe.

Bean Town (noun)	Boston (noun)
state capital and largest city of Massachusetts; a major center for banking and financial services	state capital and largest city of Massachusetts; a major center for banking and financial services