What is another word for "contents"?

Another word for contents depends on context, as contents can mean what is inside container, table of contents, or substance of something. For contents meaning what is inside box or bag, synonyms include inside, interior, load, cargo, items, materials, stuff, ingredients, and substance, for example contents of box could be called items inside or load. For contents meaning table of contents in book, another word is index, outline, or list of chapters. For contents meaning substance or meaning of speech or writing, another word is subject matter, substance, essence, gist, meaning, and material, for example content of lecture means substance. For contents meaning belongings inside house, another word is possessions or belongings. For example, instead of saying check contents of package, you could say check items inside package. Instead of saying contents of book, you could say substance of book. In digital context, contents of website is called content. The singular content versus plural contents also matters, content is uncountable like digital content, contents is countable like contents of bag. In cleaning context, contents of room that need cleaning could be called items. So another word for contents is items, substance, or subject matter depending on whether you mean physical things inside container or abstract meaning inside writing, and choosing correct synonym requires understanding context of container versus intellectual contents.