threat vs terror

threat and terror both are nouns.

Word	Noun	Adjective	Verb	Adverb
threat	Yes	No	No	No
terror	Yes	No	No	No

As nouns, threat and terror are synonyms defined as:

Other synonyms of threat include scourge.

threat (noun)	terror (noun)
a warning that something unpleasant is imminent	the use of extreme fear in order to coerce people (especially for political reasons)
declaration of an intention or a determination to inflict harm on another	an overwhelming feeling of fear and anxiety
a person who inspires fear or dread	a very troublesome child
something that is a source of danger	a person who inspires fear or dread