Impairment
Part of speech: noun
Definition: The result of being impaired; a deterioration or weakening; a disability or handicap; an inefficient part or factor.
Damage
Part of speech: verb
Definition: To make something less intact or even destroy it; to harm or cause destruction.
Part of speech: noun
Definition: The abstract measure of something not being intact; harm.Cost or expense.
Example sentence: Just as food eaten without appetite is a tedious nourishment, so does study without zeal damage the memory by not assimilating what it absorbs.