energise vs perk up

energise and perk up both are verbs.

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

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

Other synonyms of energise include arouse, brace, energize, stimulate.

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