lighten up vs lighten up

lighten up and lighten up both are verbs.

Word	Noun	Adjective	Verb	Adverb
lighten up	No	No	Yes	No
lighten up	No	No	Yes	No

lighten up (verb)	lighten up (verb)
make more cheerful through the use of color	make more cheerful through the use of color
become lighter	become lighter
become more cheerful	become more cheerful
make more cheerful	make more cheerful