An adjective in predicate position is called a "predicate adjective";
The word is good
An adjective in attributive position is called an "attributive adjective;
The good word...
An adjective in predicate position will be anarthrous and be the complement of a linking verb. If attributive, then the adjective will be articular. Study chapter 9 in BBG.
An attributive adjective will come after the noun it modifies. It must agree in gender, number, and definiteness.
A predicate adjective agrees with its noun in gender and number but not definiteness. It will always be anarthrous, and it may either precede or follow the noun.
See here or watch these videos for attributive, predicate, and substantival uses of the adjective.