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"parity" is also used as a crossword clue. If that's what you saw, the answer is often equivalence (11 letters).
Definitions
Equality of status, value, or level.
Word origin
From Middle French parité, from Late Latin paritās, from Latin pār (“equal”). Equivalent to pari- + -ty.
Used in a sentence
“Altogether, Microsoft claims a 99% feature parity between 32-bit and 64-bit editions.”
“Parity is always preserved in such operations.”
“The particles' parities can switch at random.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Equal status”6 letters
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