central vs halfway

central is a noun but halfway is not a noun.

Word	Noun	Adjective	Verb	Adverb
central	Yes	Yes	No	No
halfway	No	Yes	No	Yes

central (noun)	halfway (noun)
a workplace that serves as a telecommunications facility where lines from telephones can be connected together to permit communication

central (adjective)	halfway (adjective)
in or near a center or constituting a center; the inner area	equally distant from the extremes
serving as an essential component	including only half or a portion
	at a point midway between two extremes

central (adverb)	halfway (adverb)
	at half the distance; at the middle