Category Nuances matching duration:

• long,
• longer,
• variable,
• small,
• fixed,
• short,

Members for simple category duration:

• joint_life,
• month,
• first_date,
• quarters,
• frame_length,
• image_sequence,
• priority,
• six_month,
• fixed_term,
• summer,
• years,
• five_years,
• nighttime,
• cycle_time,
• winter_period,
• term,
• approach,
• evening,
• week,
• semester,
• vacation,
• day,
• days,