Final answer:
Latin nouns are categorized into five groups known as declensions, which are based on the endings of the nouns in various grammatical cases.
Step-by-step explanation:
Latin divides all nouns into five groups called declensions. These groups are based on the endings of the nouns in their various cases and numbers.
In Latin, the declensions are essential to understanding how nouns behave syntactically and can change based on their role in a sentence, whether as the subject, object, or possession, among other grammatical functions.
The five declensions are broadly categorized by their nominative singular ending: the first declension typically ends in -a, the second in -us or -um, the third has various endings such as -is, the fourth ends in -us, and the fifth in -es.
Understanding declensions is a crucial part of mastering Latin grammar.