business vs office

business and office both are nouns.

Word	Noun	Adjective	Verb	Adverb
business	Yes	No	No	No
office	Yes	No	No	No

As nouns, office is a hyponym of business; that is, office is a word with a more specific, narrower meaning than business:

business (noun)	office (noun)
the principal activity in your life that you do to earn money	a religious rite or service prescribed by ecclesiastical authorities
the activity of providing goods and services involving financial and commercial and industrial aspects	the actions and activities assigned to or required or expected of a person or group
the volume of commercial activity	a job in an organization
incidental activity performed by an actor for dramatic effect	place of business where professional or clerical duties are performed
an immediate objective	professional or clerical workers in an office
a rightful concern or responsibility	an administrative unit of government
a commercial or industrial enterprise and the people who constitute it	(of a government or government official) holding an office means being in power
customers collectively
business concerns collectively