On the other hand, these words can behave inflexion like adjectives and inflect for degree even when they are used as nouns.
The richest in our society will never support such parties.
The poorest in our society will never support such parties.
This means that even when these adjective are used as nouns, i.e., as heads of noun phrases, they retain one of characteristics of adjectives. Such examples of conversion are know as examples of partial conversion. Some more examples of partial conversion are listed below.
As in arts, so also in politics, the new must always prevail over the old.
The actual creation of the new in speech is.... Very rare.
Ring out the old, ring in the new.