A book is called a "livre" in French. It is a masculin noun so used in a sentence it would be "J'ai un nouveau livre" ~ I have a new book. It would be pronounced liv reu . Be careful not to employ "une livre" which is a feminine nous meaning a pound as in I weigh 200 pounds ~ "Je pèse 200 livres"
Un livre (masc.), plural: des livres.
The plural of "bonjour" in French is "bonjours."
The plural of "agréable" in French is "agréables."
A sister is "une soeur" in French. The plural is "des soeurs".
The plural of book is books. As in "these are good books".
The plural of "objet" in French is "objets."
The plural of "woman" in French is "femmes."
If you mean "miss" as in "madame", the plural is "mesdames".
The plural of "princess" in French is "princesses."
les is the plural for both articles 'la' and 'le' in French
If you are asking for "Your Book" they will be "Ton Livre" - for Second person singular "Votre Livre" - for Second person Plural
The plural of egg in French is "œufs."