"headquarters" in the noun sense
1. headquarters, central office, main office, home office, home base
usually plural) the office that serves as the administrative center of an enterprise
"many companies have their headquarters in New York"
2. headquarters, HQ, military headquarters
the military installation from which a commander performs the functions of command
"the general's headquarters were a couple of large tents"
3. headquarters
plural) a military unit consisting of a commander and the headquarters staff
"headquarters" in the verb sense
1. headquarter
provide with headquarters
"the compnay is headquartered in New Jersey"
Source: WordNet® (An amazing lexical database of English)
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