unrest vs fermentation

unrest and fermentation both are nouns.

Word	Noun	Adjective	Verb	Adverb
unrest	Yes	No	No	No
fermentation	Yes	No	No	No

As nouns, unrest and fermentation are synonyms defined as:

unrest and fermentation: a state of agitation or turbulent change or development

Other synonyms of unrest include agitation, ferment, tempestuousness.

unrest (noun)	fermentation (noun)
a feeling of restless agitation	a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol
a state of agitation or turbulent change or development	a state of agitation or turbulent change or development