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ABSTRACT NOUN (抽象名詞)Abstract nouns refer to ideas, feelings, qualities, etc. They are not concrete objects, so you cannot see them or touch them. The table below show the common suffixes (字根) of abstract nouns.SuffixesExamples-nesshappiness, bitterness, blindness, brightness, business, calmness, fitness, kindness,laziness, likeness, loneliness, madness, sadness, weakness-mentadvertisement, agreement, argument, embarrassment, enjoyment, entertainment,management, movement, punishment-ionattention, action, division, expectation, explanation, imagination, invitation, persuasion, separation -y, -ry, -tycruelty, discovery, difficulty, honesty, injury, loyalty, prosperity, safety-thdeath, depth, growth, health, length, strength, warmth, wealth, width, youth-shipfriendship, hardship, leadership, partnership, penmanship, scholarship, relationship-ismcapitalism, enthusiasm, racism, socialism-hoodadulthood, childhood, likelihood, manhood, neighbourhood, womanhood-ceabsence, confidence, obedience, silence-urearchitecture, departure, creature, literature, manufacture, pleasure-domboredom, freedom, kingdom, wisdom-agemarriage, mileage, shortage, storageThe following are more examples of abstract nouns:anger beauty belief choice comfort envy heighthorror luck peace respect risk success thirst