perk up vs energise

perk up and energise both are verbs.

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

As verbs, perk up and energise are synonyms defined as:

Other synonyms of perk up include arouse, brace, energize, stimulate.

perk up (verb)	energise (verb)
gain or regain energy	cause to be alert and energetic
cause to be alert and energetic	raise to a higher energy level