Base and Main office

Base noun - An immaterial thing upon which something else rests.

Main office and base are semantically related In some cases you can use "Main office" instead a noun "Base".

Nearby Words: basic, basal, based, baseline, baseball

Main office noun - (usually plural) the office that serves as the administrative center of an enterprise.

Base and main office are semantically related in center of operations topic. You can use "Base" instead a noun phrase "Main office", if it concerns topics such as center of authority.