dusky vs grey-haired

dusky

• Ashen; having a greyish skin coloration. 

• Dimly lit, as at dusk (evening). 

• Having a shade of color that is rather dark. 

• A dusky dolphin. 

• A dusky grouse. 

• A dusky shark. 

grey-haired

• Having grey hair. 

• old, wise, experienced.