The plural of book is books.
As in "these are good books".
Books is already the plural of book.
"Book" can be both singular and plural. When referring to one book, it is singular. When referring to more than one book, it is plural.
noun that are plural in form but singular in meaning
Book author is actually two words. The plural is book authors.
Index books is the plural form.
Books.
these books.
Yes, the form book's is the singular possessive form.Example: The book's cover is torn.The plural form for the noun book is books; the plural possessive form is books'.
Singular: book / Plural: books Singular: cat / Plural: cats Singular: child / Plural: children Singular: foot / Plural: feet
Books
stupid, dont u know? Even my 5 year old sista knows that!!!
Libraries is the plural form of library.