tightness vs constriction

tightness and constriction both are nouns.

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

As nouns, tightness and constriction are synonyms defined as:

tightness (noun)	constriction (noun)
lack of movement or room for movement	the action or process of compressing
extreme stinginess	a tight feeling in some part of the body
the spatial property of being crowded together	tight or narrow compression
a tight feeling in some part of the body	a narrowing that reduces the flow through a channel
a state occasioned by scarcity of money and a shortage of credit