stringency vs tightness

stringency and tightness both are nouns.

Word	Noun	Adjective	Verb	Adverb
stringency	Yes	No	No	No
tightness	Yes	No	No	No

As nouns, stringency and tightness are synonyms defined as:

stringency and tightness: a state occasioned by scarcity of money and a shortage of credit

stringency (noun)	tightness (noun)
conscientious attention to rules and details	lack of movement or room for movement
a state occasioned by scarcity of money and a shortage of credit	extreme stinginess
	the spatial property of being crowded together
	a tight feeling in some part of the body
	a state occasioned by scarcity of money and a shortage of credit