noun phrasesSubcategorization for noun phrases and verb phrases of all types.
plural noun(‘Athens’ is a plural noun in Greek; one might compare other such synoikised places, like Philippi.)
head nounThey are alike in that both form part of a single entity-identifier; this is reflected in surface syntax by the fact that they form part of the same noun phrase as their head noun.
single nounIn general, the following word forms are included; where it is possible to describe a subject with a single noun, this is preferred.
singular nounProbably NP0 (proper noun), but maybe NN1 (singular noun)
noun or nounThe temptation to equate the two positions relies apparently on two things: on the fact that in each case we have an adjective and a noun or noun phrase, and on the supposition that attributive adjectives and predicative adjectives all share the referential locus of the head noun to which they are related.