liven up vs energise

liven up and energise both are verbs.

Word	Noun	Adjective	Verb	Adverb
liven up	No	No	Yes	No
energise	No	No	Yes	No

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

Other hypernyms of liven up include arouse, brace, energize, perk up, stimulate.

liven up (verb)	energise (verb)
make lively	cause to be alert and energetic
	raise to a higher energy level