It's "contents are". "Contents" is a plural noun that we use to speak about the things that are inside a box, bag, etc. or that are written in an email, book, etc.
It's "contents are". "Contents" is a plural noun that we use to talk about the things that are inside a container (box, bag, briefcase, etc.) or the things that are written in an email, book, post, etc.
What are the contents of your bag?
What is the contents of your bag?
Remember, we use plural determiners and pronouns (they, them, these, those, etc.) with plural nouns.
The contents of the letter are crucial. You should keep them confidential.
Exceptions? The phrase "table of contents", which refers to a list of chapters of a book or report, is sometimes abbreviated as "contents". Use a singular verb in this case.
The table of contents is an important element of a long report or book.
The contents is an important element of a long report or book.
On the other hand, "content" (without "s") is typically an uncountable noun, and as a result takes a verb in the singular.
The content of her book is completely described in the title. (Uncountable)
Being uncountable, you cannot say "a content"; however, when speaking about the amount of a substance that something contains, you can use "a".
My food has a low sugar content.
Notice that "contents" and "content" are different words. The uncountable noun, "content", can be used to talk about the story or ideas of a website, speech, book, piece of writing, etc.
The content of your website is really useful.
As mentioned above, "contents" can refer to the things within a bag, box, briefcase, room, etc. as well as the things that are written in a book, letter, report, etc.
John emptied the contents of the bag onto the bed.
I couldn't remember the contents of the report.
Follow the same convention with the plural nouns belongings and goods.
