Category Nuances for fluidity:

• vital,
• inherent,
• cellular,
• physical,
• feminine,
• emergent,
• formal,
• aesthetic,
• concrete,
• essential,
• necessary,
• key,
• fundamental,
• preferable,
• natural,
• observable,
• general,
• internal,

Simple Categories for fluidity:

• attribute,
• ability,
• trait,
• characteristic,
• property,
• quality,
• composition,