downfall vs ruination

downfall and ruination both are nouns.

Word	Noun	Adjective	Verb	Adverb
downfall	Yes	No	No	No
ruination	Yes	No	No	No

As nouns, downfall and ruination are synonyms defined as:

downfall and ruination: failure that results in a loss of position or reputation

Other synonyms of downfall include ruin.

downfall (noun)	ruination (noun)
a sudden decline in strength or number or importance	destruction achieved by causing something to be wrecked or ruined
failure that results in a loss of position or reputation	an event that results in destruction
the falling to earth of any form of water (rain or snow or hail or sleet or mist)	failure that results in a loss of position or reputation
	an irrecoverable state of devastation and destruction