A

Characteristically, they lack the number and article contrast of concrete nouns (*eagernesses; *a bravery) but some can be ‘individualized’ (difficulty/-ies; experience(s); a temptation, etc.). Many are derived from adjectives, verbs and other nouns by the addition of specific suffixes of Germanic and Latin origin: e.g. child-hood; scholar-ship; free-dom; dull-ness; classic-ism; pedestrianization, etc.