renew vs regenerate

renew is not an adjective while regenerate is an adjective.

Word	Noun	Adjective	Verb	Adverb
renew	No	No	Yes	No
regenerate	No	Yes	Yes	No

As verbs, regenerate is a hypernym of renew; that is, regenerate is a word with a broader meaning than renew:

renew: cause to appear in a new form
regenerate: get or give new life or energy; return to life, regain energy, recuperate

Other hypernyms of renew include rejuvenate, restore.

As verbs, renew and regenerate are synonyms defined as:

renew and regenerate: reestablish on a new, usually improved, basis or make new or like new

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

renew: reestablish on a new, usually improved, basis or make new or like new
regenerate: get or give new life or energy; return to life, regain energy, recuperate

renew (adjective)	regenerate (adjective)
	reformed spiritually or morally

renew (verb)	regenerate (verb)
cause to appear in a new form	restore strength
reestablish on a new, usually improved, basis or make new or like new	undergo regeneration
	form or produce anew
	get or give new life or energy; return to life, regain energy, recuperate
	replace (tissue or a body part) through the formation of new tissue
	be formed or shaped anew
	bring, lead, or force to abandon a wrong or evil course of life, conduct, and adopt a right one
	amplify (an electron current) by causing part of the power in the output circuit to act upon the input circuit
	reestablish on a new, usually improved, basis or make new or like new