finalize vs nail down

finalize and nail down both are verbs.

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

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

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

Other synonyms of finalize include finalise, settle.

finalize (verb)	nail down (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