Category Nuances for null:

• planetary,
• physiologic,
• several,
• cellular,
• biological,
• direct,
• basic,
• immune,
• central,
• physiological,
• diverse,
• pathogenic,
• primary,
• complex,
• normal,
• important,
• crucial,
• specialized,
• underlying,
• dynamic,
• distinctive,
• biologic,
• essential,
• neural,
• integrative,
• mammalian,
• organisational,
• spatial,
• behavioral,
• separate,
• vital,
• ongoing,
• developmental,
• elementary,
• neoplastic,
• catalytic,
• active,
• anabolic,
• significant,
• critical,
• mathematical,
• immunologic,
• global,
• irreversible,
• neurological,
• metabolic,
• organizational,
• unique,
• regulated,
• epidermal,
• fundamental,
• geological,
• chronic,
• molecular,
• nuclear,
• fungal,
• chemical,
• complicated,
• regulatory,
• immunological,
• linear,
• distinct,
• multicellular,
• functional,
• genetic,
• malignant,
• biomedical,
• abnormal,
• transient,
• opposing,
• key,
• necessary,
• intracellular,
• neuronal,
• logical,
• regulation,
• musical,
• healing,
• major,
• pathological,
• static,
• useless,
• eukaryotic,
• perceptual,
• biochemical,
• pathologic,
• igneous,
• mental,

Simple Categories for null:

• process,
• behaviour,
• routine,
• processing,
• event,
• activation,
• calculation,
• ability,
• cognition,
• computation,
• behavior,
• phenomenon,
• growth,
• activity,
• action,
• procedure,
• development,
• attribute,
• operation,
• knowledge,
• structure,