It looks like you may have meant "Morbidity and Mortality" - two key terms in medicine and public health. Let me give you a quick overview while I pull up more detailed information.

Morbidity refers to the state of having a disease or medical condition - it measures how often a disease occurs in a population. Mortality refers to death, and mortality rate measures how often death occurs in a population. Together, they are used to assess the burden of disease and the effectiveness of healthcare interventions.

I notice your question is quite brief - "Morbality and moderality" appears to be a misspelling of "Morbidity and Mortality." Let me pull some textbook content to give you a thorough answer, but I want to check if you had something more specific in mind.