Category Nuances for null:

• primary,
• metabolic,
• basic,
• domestic,
• military,
• everyday,
• traditional,
• feminine,
• working,
• skilled,
• sensitive,
• dangerous,
• specialised,
• benign,
• mundane,
• visible,
• home,
• routine,
• cultural,
• unpaid,
• indian,
• physical,
• necessary,
• maternal,
• complex,
• intensive,
• utilitarian,
• odd,
• small,
• industrial,
• reproductive,
• female,
• practical,
• specialized,
• supportive,
• important,
• valuable,
• productive,
• strenuous,
• informal,
• crucial,
• menial,
• essential,
• wet,
• ordinary,
• simple,
• single,
• ancillary,
• visual,
• current,
• unskilled,
• logistical,
• past,
• real,
• promotional,
• outdoor,
• tactile,
• special,
• meaningful,
• major,
• dirty,
• private,
• multicultural,

Simple Categories for null:

• activity,
• task,
• quality,
• duty,
• arrangement,
• knowledge,
• service,
• occupation,
• position,
• group,
• level,
• behaviour,
• care,
• mission,
• use,
• quantity,
• work,
• space,
• business,
• labor,
• matter,
• practice,
• labour,
• job,
• course,
• usage,
• trait,
• production,