inaccuracy

Inaccuracy is a related term of flaw.

As nouns the difference between inaccuracy and flaw

is that inaccuracy is (uncountable) the property of being inaccurate; lack of accuracy while flaw is (obsolete) a flake, fragment, or shiver or flaw can be a sudden burst or gust of wind of short duration.

As a verb flaw is

to add a flaw to, to make imperfect or defective.

In uncountable terms the difference between inaccuracy and unclarity

is that inaccuracy is incorrect calibration of a measuring device, or incorrect use; lack of precision while unclarity is the state or quality of what is unclear or confusingly formulated; ambiguousness; imprecision.

In countable terms the difference between inaccuracy and unclarity

is that inaccuracy is a statement, passage etc. that is inaccurate or false while unclarity is a statement that is unclear.