entrench vs secure

entrench is not an adjective while secure is an adjective.

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

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

Other hypernyms of entrench include fasten, fix.

entrench (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

entrench (verb)	secure (verb)
fix firmly or securely	make certain of
occupy a trench or secured area	cause to be firmly attached
impinge or infringe upon	fill or close tightly with or as if with a plug
	furnish with battens
	get by special effort
	assure payment of