Category Nuances matching sickness:

• serious,
• dangerous,
• preventable,
• related,
• big,
• scary,
• basic,
• temporary,
• foreign,
• common,
• physical,
• natural,
• curable,
• acute,
• widespread,
• little,
• external,
• fatal,
• nasty,

Members for simple category sickness:

• cold,
• blindness,
• flu,
• legionnaire_disease,
• common_cold,
• ear_infection,
• nausea,
• measles,
• tumor,
• mental_illness,
• ulcer,
• lung_infection,
• cholera,
• coronary_disease,
• cancer,
• visual_impairment,
• white_leprosy,
• asthma,
• meningitis,
• sunburn,
• gout,
• pneumonia,
• hepatitis,
• infection,
• diabetes,
• tumour,
• rabies,
• smallpox,
• dysentery,
• malaria,
• back_strain,
• diphtheria,
• influenza,
• bronchitis,
• typhoid,