Oxford Advanced Learner’s Dictionary, 8th edition

content (noun)

1 contents [ plural ] the things that are contained in sth
(*) He tipped the contents of the bag onto the table.
(*) Fire has caused severe damage to the contents of the building.
(*) She hadn't read the letter and so was unaware of its contents.

2 contents [ plural ] the different sections that are contained in a book
(*) a table of contents (= the list at the front of a book)
(*) a contents page

3 [ singular ] the subject matter of a book, speech, programme, etc
(*) Your tone of voice is as important as the content of what you have to say.
(*) The content of the course depends on what the students would like to study.
(*) Her poetry has a good deal of political content.

4 [ singular ] ( following a noun ) the amount of a substance that is contained in sth else
(*) food with a high fat content
(*) the alcohol content of a drink

5 [ uncountable ] ( computing ) the information or other material contained on a website or CD-ROM
(*) online content providers

Mam nadzieje, że te przykłady ze słownika rozwieją Twoje wątpliwości.
Pozdro!