Attributive usage of a collateral adjective is generally similar in meaning to attributive use of the corresponding noun.
Attributive compounds – modifiers within the noun phrase – are typically hyphenated, whereas the same compounds used as predicates will typically not be (if they are temporary compounds), unless they are permanent compounds attested as dictionary headwords.
A compound modifier (also called a compound adjective, phrasal adjective, or adjectival phrase) is a compound of two or more attributive words: That is, more than one word that together modify a noun.