armed forces vs sector

armed forces and sector both are nouns.

Word	Noun	Adjective	Verb	Adverb
armed forces	Yes	No	No	No
sector	Yes	No	No	No

armed forces (noun)	sector (noun)
the military forces of a nation	measuring instrument consisting of two graduated arms hinged at one end
	a particular aspect of life or activity
	a social group that forms part of the society or the economy
	a portion of a military position
	the minimum track length that can be assigned to store information; unless otherwise specified a sector of data consists of 512 bytes
	a plane figure bounded by two radii and the included arc of a circle