hard - high
- hard
- hard all through
- hard alloy
- hard anodic coating
- hard anodic oxide layer
- hard anodising
- hard anodization
- hard anodizing
- hard asphalt
- hard bilge
- hard brown coal
- hard case
- hard cash
- hard cast iron
- hard cheese
- hard chrome
- hard chromium bath
- hard chromium coating
- hard chromium plating
- hard chromium plating bath
- hard coal
- hard coal with a low sulfur content
- hard color anodizing
- hard copy
- hard cornering
- hard disc management
- hard disc system
- hard disk
- hard disk capacity
- hard disk controller
- hard disk drive
- hard disk error
- hard disk platter
- hard disk recording
- hard drive
- hard driving
- hard drugs
- hard drying time
- hard error
- hard fibreboard
