Attrition vs Abration - What's the difference?

As nouns the difference between attrition and abration

is that attrition is wearing or grinding down by friction while abration is .

wearing or grinding down by friction

the gradual reduction in a tangible or intangible resource due to causes that are passive and do not involve productive use of the resource.

(human resources) A gradual, natural reduction in membership or personnel, as through retirement, resignation, or death

(sciences) The loss of participants during an experiment

(theology) Imperfect contrition or remorse

(dentistry) The wearing of teeth due to their grinding

* (employment reduction by natural causes) natural wastage

* accretion

* attrit * attritional * attritionary * attritive * attrition damage

(head)