Origin: The word HIER originated from the Greek word HIEROS which means Holy or Sacred.
The words derived from this possess the above meaning.
Words:
Hierarch = Chief priest, archbishop or other leader
Hierarchy = A system in which members of an organization or society are ranked according to relative status or authority.
Hieratic = Of or concerning priests
Hierocracy = Rule by priests.
Hieroglyph = A stylized picture of an object representing a word, syllable, or sound as found in ancient Egyptian and certain other writing systems.
Hierogram = A sacred inscription or symbol.
Hierolatry = The worship of saints or sacred things.
Hieromonk = A monk who is also a priest in the Orthodox Church and Eastern Catholicism.
Hierurgy = A holy act or rite of worship.