finisher vs stitcher

finisher and stitcher both are nouns.

Word	Noun	Adjective	Verb	Adverb
finisher	Yes	No	No	No
stitcher	Yes	No	No	No

As nouns, stitcher is a hyponym of finisher; that is, stitcher is a word with a more specific, narrower meaning than finisher:

finisher (noun)	stitcher (noun)
an animal that wins in a contest of speed	a garmentmaker who performs the finishing steps
a race car that finishes a race
a worker who performs the last step in a manufacturing process
a painter who applies a finishing coat
(baseball) a relief pitcher who can protect a lead in the last inning or two of the game
a racing driver who finishes a race