"Grouping" enum values in C

If I had some enums like

typedef enum {
    AN_TRISTATE_0,
    AN_TRISTATE_1,
    AN_NOTHING,
    AN_MOTOR_1,
    AN_MOTOR_2,
    AN_MOTOR_3,
    AN_SENSOR_1,
    AN_SENSOR_2,
    AN_SENSOR_3,
    AN_SENSOR_4,
    AN_SENSOR_5
} adc_pin_func_t;

and

adc_pin_func_t a_particular_pin = ...

, would it be possible it check if the pin is part of a particular group, e.g pin is part of AN_MOTOR or part of AN_SENSOR, instead of having to check against each item in each possible group.

Or are there more efficient ways of doing this, other than using enums?

Thanks in advance