Yes it is. However though the printing ink is matter also, the intellectual content of the book is not matter
The subject matter is what the book is about. So if you have a book on, say, Winston Churchill, he is the subject matter.
Anything that has mass is considered matter.
When seeking a book endorsement from a reputable source, consider the credibility and reputation of the endorser, their expertise in the book's subject matter, their audience reach, and the alignment of their values with the book's content.
No Laughing Matter - book - was created in 1986.
There are 30 different combinations if the order in which the books were chosen counts, so a set of book A and book B is considered different from a set of book B and book A. There are 15 different combinations if it does not matter in which order the books were chosen, so a set of book A and book B is considered the same as a set of book B and book A.
Data is not matter.
Leaves are matter.
The ISBN of No Laughing Matter - book - is 978-0743247177.
No Laughing Matter - book - has 335 pages.
Anything that has mass and takes up space is considered matter.
A radio can be classified as matter. Anything that all that takes up space is considered to be matter. No matter how small the item if it takes up space it is considered to be matter.
No, light is not considered to be matter. It is a form of electromagnetic radiation that does not have mass or occupy space like particles of matter do.