finished vs through

finished and through both are adjectives.

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

finished (adjective)	through (adjective)
ended or brought to an end	(of a route or journey etc.) continuing without requiring stops or changes
(of materials or goods) brought to the desired final state	having finished or arrived at completion
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

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