calibrate vs fine-tune

calibrate and fine-tune both are verbs.

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

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

calibrate and fine-tune: make fine adjustments or divide into marked intervals for optimal measuring

Other synonyms of calibrate include graduate.

calibrate (verb)	fine-tune (verb)
make fine adjustments or divide into marked intervals for optimal measuring	adjust finely
measure the caliber of	improve or perfect by pruning or polishing
mark (the scale of a measuring instrument) so that it can be read in the desired units	make fine adjustments or divide into marked intervals for optimal measuring