nail down vs deliver the goods

nail down and deliver the goods both are verbs.

Word	Noun	Adjective	Verb	Adverb
nail down	No	No	Yes	No
deliver the goods	No	No	Yes	No

As verbs, deliver the goods is a hypernym of nail down; that is, deliver the goods is a word with a broader meaning than nail down:

Other hypernyms of nail down include bring home the bacon, come through, succeed, win.

nail down (verb)	deliver the goods (verb)
make final; put the last touches on; put into final form	attain success or reach a desired goal
define clearly
succeed in obtaining a position