through vs finished

through and finished both are adjectives.

Word	Noun	Adjective	Verb	Adverb
through	No	Yes	No	Yes
finished	No	Yes	No	No

through (adjective)	finished (adjective)
(of a route or journey etc.) continuing without requiring stops or changes	ended or brought to an end
having finished or arrived at completion	(of materials or goods) brought to the desired final state
	brought to ruin
	having a surface coating or finish applied
	(of skills or the products of skills) brought to or having the greatest excellence; perfected

through (adverb)	finished (adverb)
over the whole distance
in diameter
from beginning to end
to completion
throughout the entire extent