Category Nuances for fluidity:

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

Simple Categories for fluidity:

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