fine-tune vs polish

fine-tune is not a noun while polish is a noun.

Word	Noun	Adjective	Verb	Adverb
fine-tune	No	No	Yes	No
polish	Yes	No	Yes	No

As verbs, fine-tune and polish are synonyms defined as:

Other synonyms of fine-tune include down, refine.

fine-tune (noun)	polish (noun)
	the property of being smooth and shiny
	a highly developed state of perfection; having a flawless or impeccable quality
	a preparation used in polishing

fine-tune (verb)	polish (verb)
adjust finely	bring to a highly developed, finished, or refined state
improve or perfect by pruning or polishing	improve or perfect by pruning or polishing
make fine adjustments or divide into marked intervals for optimal measuring	make (a surface) shine