Grammatical element Used to describe/entails...
nominative case Subject
genitive case Specification, possession
dative case indirect object
>plural always same as ablative plural
accusative case direct object
ablative case prepositional case
vocative case direct address
>singular always the same as nominative (except for nominative -us- --> -e-)
>plural always same as nominative plural
Grammatical element Used to describe/entails...
1st declination -ae- genitive ending [sg, from nom to voc--a/ae/ae/am/a/a] [pl, from nom to voc--ae/arum/is/as/is/ae]
2nd declination -i- genitive ending
3rd declination -is- genitive ending
4th declination -us- genitive ending
5th declination -ei- genitive ending