Specification uses object terminology to describe data structures

[joshuagl]

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The specification frequently uses the terms objects, attributes and attribute-value fields. This object related terminology almost certainly reinforces the notion that JSON is the preferred/required data format.

dictionary, field and key-value may help reduce the JSON-centric nature of the specification.

[joshuagl]

Collecting some possible terms

style	collection	key	value	key-value pair
(current) JSON-ish	object	attribute	value	attribute-value field, or field
CS	dictionary	key	value	key-value pair