QUALIFIED CHANGE
Total terminus a quo =	matter (the substance) +	formal terminus a quo (the privation)
Total terminus ad quem =	matter (the substance) +	formal terminus ad quem (the accidental form)

 

UNQUALIFIED CHANGE
Total terminus a quo =	matter (primary matter) +	formal terminus a quo (the privation)
Total terminus ad quem=	matter (primary matter) +	formal terminus ad quem (the substantial form)