@JTT,
Quote:I already mentioned that a paraphrase can, by changing the position of a word, change its part of speech designation. Do you agree?
Yes I agree, but my intention was simplification, not obfuscation, since several of you are having trouble in grasping this.
Quote:two new examples, materially changed and then declare that 'that', which refers to only one, is not an adverb.
Not materially changed in meaning, I think. And they are all adjectives.
Going back to the original phrase: "the market closed little changed".
This means, the market was virtually unchanged by the time it closed.
It is a description. "Little changed" is an adjectival phrase.