The suffixes -ment, (as well as -ion, -ism ) are generally used to form nouns denoting processes, actions, phenomena: movement entertainment concealment The suffixes -ance / -ence are generally used to form nouns denoting properties, quality, state: The suffixes -ance/-ence, as a rule, correspond to the suffixes -ant / - ent in adjectives: different — difference important — importance independent — independence
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