subject matter
noun/ˈsʌbdʒɪkt mætə(r)/, /ˈsʌbdʒekt mætə(r)/
/ˈsʌbdʒɪkt mætər/, /ˈsʌbdʒekt mætər/
[uncountable]- the ideas or information contained in a book, speech, painting, etc.
- The artist was revolutionary in both subject matter and technique.
- She's searching for subject matter for her new book.
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subject matter