Category Nuances for hard_wood:

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

Simple Categories for hard_wood:

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