All 
nails
include a head, shank and point. These design features, together with the type
of coating (if present) determine a nail’s suitability for different uses and
materials. Here’s a rundown of the basic parts of a nail.
Types
of Nail Heads
 - Flathead
     Nails: The most common type of nail head, flathead nails have a large flat
     surface that allows for easy striking and also provides extra holding
     power. 
 
 - Checkered
     Flathead Nails: A crosshatch design is added to the flat head to help
     prevent your hammer from slipping while hammering at an angle 
 
 - Countersunk
     Nails: This nail head features a cone or cupped shape which allows it to
     be pushed below the material and “countersunk” out of sight
 
Types
of Nail Points
 - Diamond
     Point Nails: This common type of nail point features a slightly blunted
     tip which makes it appropriate for general usage 
 
 - Long
     Diamond Point Nails: Here the nail point is sharper and elongated which
     makes it ideal for drywall and other materials where splitting is not a
     concern 
 
 - Dull
     Point & Blunt Point Nails: Duller than a diamond point, a blunt point
     helps prevent your wood from splitting because it breaks through multiple
     fibres at once versus chiseling them apart