Modifiers matching need:

• serious,
• basic,
• special,
• urgent,

Simple categories matching urgent:

• communication,
• situation,
• call,
• event,
• action,
• need,
• task,
• procedure,
• information,
• expenditure,
• case,
• repair,
• issue,
• condition,
• inquiry,
• message,
• motivation,
• status,
• state,
• matter,
• illness,
• care,
• warning,
• crisis,
• nature,
• transactions,
• surgery,
• announcement,
• disease,
• vehicle,
• intervention,
• time,
• attention,