blackout vs dimout

blackout and dimout both are nouns.

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

As nouns, blackout and dimout are synonyms defined as:

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

Other synonyms of blackout include brownout.

blackout (noun)	dimout (noun)
a momentary loss of consciousness	darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)
partial or total loss of memory
the failure of electric power for a general region
darkness resulting from the extinction of lights (as in a city invisible to enemy aircraft)
a suspension of radio or tv broadcasting