flaw vs unsightliness

flaw

• A sudden burst of noise and disorder 

• A storm of short duration. 

• An inclusion, stain, or other defect of a diamond or other gemstone. 

• A crack or breach, a gap or fissure; a defect of continuity or cohesion. 

• A defect or error in a contract or other document which may make the document invalid or ineffective. 

• A defect, fault, or imperfection, especially one that is hidden. 

• A sudden burst or gust of wind of short duration; windflaw. 

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

• To become imperfect or defective; to crack or break. 

unsightliness

• The state of being unsightly.