Quantization is the process of digitizing.
Quantization Error is the error that results from the quantization process.
Quantization Noise is that noise that results from the quantization process.
Linearity is broken down into DNL (or DLE) and INL (or ILE). These are measures of the step size error and in the departure from an ideal straight line, respectively.
Missing Codes are those codes that can never appear in the ADC output.
End Point and Best Fit are test methods for INL. The readings of the two test methods are not compatible with each other.
TUE (Total Unadjusted Error) is the ADC output deviation from the ideal straight line from the ideal end points.
Monotonicity in a DAC is the condition where the slope of the transfer curve has a constant sign. That is, the slope is always positive or always negative. Non-monotonicity in a DAC as analogous to missing codes in an ADC.
The links below, as well as the Definitions of Terms course, will be of further help.