zip up vs secure

zip up is not an adjective while secure is an adjective.

Word	Noun	Adjective	Verb	Adverb
zip up	No	No	Yes	No
secure	No	Yes	Yes	No

As verbs, secure is a hypernym of zip up; that is, secure is a word with a broader meaning than zip up:

Other hypernyms of zip up include fasten, fix.

zip up (adjective)	secure (adjective)
	free from fear or doubt; easy in mind
	free from danger or risk
	not likely to fail or give way
	immune to attack; incapable of being tampered with
	financially safe

zip up (verb)	secure (verb)
close with a zipper	make certain of
	cause to be firmly attached
	fill or close tightly with or as if with a plug
	furnish with battens
	get by special effort
	assure payment of