nail down vs finalize

nail down and finalize both are verbs.

Word	Noun	Adjective	Verb	Adverb
nail down	No	No	Yes	No
finalize	No	No	Yes	No

As verbs, nail down and finalize are synonyms defined as:

nail down and finalize: make final; put the last touches on; put into final form

Other synonyms of nail down include finalise, settle.

nail down (verb)	finalize (verb)
make final; put the last touches on; put into final form	make final; put the last touches on; put into final form
define clearly
succeed in obtaining a position