What is a group of latin nouns called?

A group of Latin nouns is called a declension.

There are five declensions in Latin, each with its own set of endings and rules for how nouns change based on their case and number.

Here's a breakdown:

* First declension: Feminine nouns ending in -a (e.g., rosa, puella)

* Second declension: Masculine and neuter nouns ending in -us or -er (e.g., liber, ager)

* Third declension: Nouns of various genders with endings like -is, -es, -er, -or (e.g., lapis, urbs, frater)

* Fourth declension: Masculine and feminine nouns ending in -us (e.g., gradus, manus)

* Fifth declension: Feminine nouns ending in -es (e.g., dies, res)

Let me know if you want to know more about any specific declension!