compactness vs tightness

compactness and tightness both are nouns.

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

As nouns, compactness and tightness are synonyms defined as:

compactness and tightness: the spatial property of being crowded together

Other synonyms of compactness include concentration, denseness, density.

compactness (noun)	tightness (noun)
the spatial property of being crowded together	lack of movement or room for movement
the consistency of a compact solid	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