Category Nuances for hard_wood:

• harsh,
• hard,
• soft,
• short,
• delicate,
• diamagnetic,
• resonant,
• dense,
• structural,
• harder,
• reflective,
• cheap,
• noble,
• durable,
• good,
• safe,
• common,
• slippery,
• basic,
• natural,
• expensive,
• cooler,
• smooth,
• resistant,
• indigenous,
• african,
• personal,

Simple Categories for hard_wood:

• substance,
• surface,
• material,
• fibre,
• communication,
• wall,
• object,