tightness vs stringency

tightness and stringency both are nouns.

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

As nouns, tightness and stringency are synonyms defined as:

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

tightness (noun)	stringency (noun)
lack of movement or room for movement	conscientious attention to rules and details
extreme stinginess	a state occasioned by scarcity of money and a shortage of credit
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