In French, all nouns are either masculine or feminine. There are a few general rules to help determine the gender of a noun, but for the most part, you just have to memorize the gender of each noun.
One rule is that nouns ending in -age, -ege, -é, -isme, -sme, -ure, and -ment are usually masculine. For example, the word "message" (meaning "message") is masculine, as it ends in -age. On the other hand, nouns ending in -ance, -ence, -tion, -té, -té, -ie, -ée, and -ée are usually feminine. For example, the word "attention" (meaning "attention") is feminine, as it ends in -tion.
However, these rules are not absolute, and there are many exceptions. For example, the word "personne" (meaning "person") is feminine, even though it ends in -e, which is usually a marker of masculinity. Similarly, the word "table" (meaning "table") is feminine, even though it ends in -e, which is usually a marker of femininity.
One way to help remember the gender of a noun is to associate it with a gender-specific article, such as "le" for masculine nouns and "la" for feminine nouns. For example, if you want to say "the book" in French, you would use "le livre" for a masculine noun and "la livre" for a feminine noun.
In conclusion, the gender of a noun in French is an important aspect of the language that must be memorized and mastered in order to speak and write correctly. While there are some general rules that can help determine the gender of a noun, there are many exceptions to these rules, so it is important to study and memorize the gender of each noun.