Where does mora collide?

In phonology, a mora is the sub-syllabic unit that measures syllable weight: a light syllable carries one mora, a heavy syllable two, and processes such as stress and compensatory lengthening are stated over moras rather than whole syllables. Larry Hyman's A Theory of Phonological Weight (1985) develops the moraic account of weight in its chapter on syllable weight. Here mora is a unit of linguistic weight and duration, not a debtor's delay in discharging an obligation.[1]

Unit

One mora (a unit of syllable weight); heavy syllables count two.

Recovery means

Count weight units in a syllable: one for light, two for heavy.

Measured by

Inferred from weight-sensitive phonological patterns (stress, length).

In the civil-law tradition, mora is delay in the performance of an obligation: mora debitoris is the debtor's failure to perform on time, mora creditoris the creditor's failure to accept performance. Cornelius (2012), discussing mora debitoris and strict liability in the Potchefstroom Electronic Law Journal, shows the term still carries its Roman-law force in modern doctrine. Here mora is a legal delay with consequences for liability, not a phonological unit of weight.[2]

Unit

One instance of culpable delay in performing an obligation.

Recovery means

Identify a party's failure to perform (or accept performance) by the due time.

Measured by

Established doctrinally from the facts of performance and its timing.