Simple categories matching lonely:

• place,
• area,

Members with property lonely:

• shaded_groves,
• corner,
• garden,
• basement,
• cremation_ground,
• mountain_top,
• construction,
• meadow,
• coastal_grassland,
• empty_lots,
• laundry_room,
• forest_glade,
• graveyard,
• construction_site,
• palm_groves,