Humphreys emphasizes that fusion is a ‘real physical operation, not a mathematical or logical operation on predicative representations of properties.’
The next relevant fact is that many adjectives take up more than a single word, as in the following predicative examples.
Having said that, however, it has also to be said that he regarded the last two as closely related, with the predicative use being marked by an element of identity, and the identity use being marked by an element of predication.
So, just as the existential and predicative uses are not unrelated, neither are the predicative , identity, and generic implication uses unrelated.
When an adjective follows a form of be (or a few other verbs which I don't want to talk about), it is known as a predicative adjective.
Some adjectives are predicative only, as with afraid, loath, and aware in: Your brother is afraid of them, My friends seem loath to interfere, The manager became aware of her attitude.
These effects can be explained if we consider more closely the function of attributive and predicative adjectives.
In contrast to Aristotle, Brentano emphasizes the importance of existential judgements with only one term, and claims that predicative judgements are a special case of existential ones.
A curious fact about adjectives and the way they modify nominals is that very often predicative uses have a more limited range of meanings than the attributive uses.
‘Fast’ and ‘big’ are what Geach has called attributive adjectives; ‘brown’ is called a predicative adjective.