brownout vs dimout

brownout and dimout both are nouns.

Word	Noun	Adjective	Verb	Adverb
brownout	Yes	No	No	No
dimout	Yes	No	No	No

As nouns, brownout and dimout are synonyms defined as:

brownout and dimout: darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)

Other synonyms of brownout include blackout.

brownout (noun)	dimout (noun)
darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)	darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)