I’m coming to realize my sense of adjectives vs nouns is a bit fast and loose, because often in English the noun and adjective form of a word is the same. For example, black is both an adjective and a noun. Where in Japanese the noun form is 黒 and the i-adjective form is 黒い
The black dog => black is an adjective.
The dog is black => Not sure is black is an adjective or noun here. Not the primary question, but would be curious to know!
At any rate, would the correct translation be
or more generally, can Y be a noun, i-adjective, or neither? Thanks!