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Don't use the definite article before the names of colours when used as nouns
Don't use an article before the names of the five senses: sight, smell, hearing, taste and touch.
As a rule, don't use the definite article before the names of diseases.
The indefinite article is needed with common names of illnesses: I was suffering from a cold (a fever, a cough, a headache).
Abstract nouns, if used in a general sense, can't take the article.
Abstract nouns, used in a particular sense, use the article: The bravery of the Spartans was renowned.