The teaching and learning of polymorphemic words is studied from the viewpoint of psychology on the basis of criticizing traditional methods of lexical learning.
That's right. In English vocabulary, we often put two or more nouns together to form a new noun, with a meaning that combines the meanings of the two original nouns. We call these words compound nouns.
Among these latter few, the Irish have made contributions to the English language in both its lexicon and literature which can be considered second to none.