The List Goes On... (10/27)

I'm thinking of five different nouns. After the first noun, you'll drop a letter each time you progress to the next clue, and using the same letters minus one, you'll rearrange them to get the answer (there is one clue that doesn't require rearrangement). Thus, clue A has the most letters and clue E the least. Here are the clues:

A) holy site
B) computer tool
C) writer's inspiration
D) math term
E) letter in Greek alphabet

What are these nouns?


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