Firstdeclension
The first declension is a term used in Latin grammar to describe a class of nouns and adjectives whose nominative singular typically ends in -a and which form their full paradigm with characteristic endings. Most words in this declension are feminine, but a small number of masculine nouns also belong to the group. Notable masculine members include nauta (sailor), Poeta (poet), and agricola (farmer). Some common examples of feminine nouns are puella (girl), rosa (rose), and fēmina (woman).
The standard paradigm for the first declension is as follows. In singular: nominative -a, genitive -ae, dative
A noun’s gender in the first declension is typically feminine, and most adjectives of the same waning
In summary, the first declension encompasses many feminine nouns ending in -a, with a minority of masculine