My work is all about the structure and meaning of derivative adjectives. And it was quite easy with flower-flowered pairs. But what about such words as "final" or "annual"? Their stems "ann" and "fin" ...
What’s the rule to decide whether you add -er or whether you add -or when creating a noun from a verb? Sometimes it’s -er: read > reader hate > hater hit > hitter But other times it’s -or: ...