secure vs beef up

secure is an adjective but beef up is not an adjective.

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

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

Other hypernyms of secure include fortify, strengthen.

secure (adjective)	beef up (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)	beef up (verb)
make certain of	make strong or stronger
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