Category Nuances for grate:

• internal,
• hard,
• protective,
• metal,
• interior,
• removable,
• external,
• iron,
• important,
• physical,
• spare,
• municipal,
• permanent,
• essential,
• permeable,
• uneven,
• hazardous,

Simple Categories for grate:

• part,
• measure,
• surface,
• facility,
• item,
• barrier,
• fixture,
• alteration,
• partition,
• ground,
• structure,