hang up vs secure

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

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

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

Other hypernyms of hang up include fasten, fix.

hang 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

hang up (verb)	secure (verb)
interrupt a telephone conversation	make certain of
put a telephone receiver back in its cradle	cause to be firmly attached
cause to be hanging or suspended	fill or close tightly with or as if with a plug
	furnish with battens
	get by special effort
	assure payment of