Category Nuances for coupler:

• spare,
• loose,
• peripheral,
• passive,
• moving,
• critical,
• stock,
• small,
• old,
• flexible,
• planar,
• heavy,
• approved,
• auxiliary,
• complex,
• analog,
• related,
• optical,
• fixed,
• directional,
• static,
• delicate,
• vital,
• external,

Simple Categories for coupler:

• part,
• structure,
• hardware,
• system,
• stuff,
• device,
• equipment,
• coupling,