Imperfection

Name(s): 
Baseness
Blemish
Cheapness
Coarseness
Commonness
Defection
Defectiveness
Deficiency
Deformation
Dirtiness
Disfigurement
Distortion
Dullness
Erroneousness
Failure
Fallibility
Faultiness
Flaw
Immaturity
Impairment
Imperfection
Imprecision
Impurity
Inaccuracy
Inadequacy
Incompleteness
Indifference
Inferiority
Lack
Meanness
Mediocrity
Problem
Shortage
Stain
Tedium
Unevenness
Vapidity
Warpedness
Weakness
Nature

The imperfect, or past imperfective, is a verb form in linguistics.

Imperfect or imperfection or imperfectionist may also refer to:

Source: Wikipedia

Broader 
Strategy(ies) 
Value(s) 
Type 
(A) Abstract fundamental problems