Hd
https://en.m.wikipedia.org/wiki/Special:AllPages?from=Hd&to=&namespace=0
HDI – Human Development Index
https://en.m.wikipedia.org/wiki/Human_Development_Index
List of countries by Human Development Index
https://en.m.wikipedia.org/wiki/List_of_countries_by_Human_Development_Index
HDD – Hard disk drive
https://en.m.wikipedia.org/wiki/Hard_disk_drive
HDMI
https://en.m.wikipedia.org/wiki/HDMI