secure vs stopple

secure is not a noun while stopple is a noun.

Word	Noun	Adjective	Verb	Adverb
secure	No	Yes	Yes	No
stopple	Yes	No	Yes	No

As verbs, stopple is a hyponym of secure; that is, stopple is a word with a more specific, narrower meaning than secure:

Other hyponyms of secure include stopper, tampon, chink, cork, cork up.

secure (noun)	stopple (noun)
	blockage consisting of an object designed to fill a hole tightly

secure (adjective)	stopple (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

secure (verb)	stopple (verb)
make certain of	close or secure with or as if with a stopper
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