Change: called "Netlon
Sentinel".
pir:
"Spiritual" in arabic.
"Feast" in russian.
Abbreviation of French "planification intégrée des ressources", or in English, integrated resource planning.
The first part of the mathematical formula for the area of a
circle, "pi r squared".
Pier. This could relate to the song's water-inspired percussion.
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(Word count: 215)