1.
contents, inside
What is physically contained inside something.
2.
substance, essence
The real quality or meaning of something.
中身 means contents (physical) or substance/essence (abstract). It refers to what's inside something.
PHYSICAL CONTENTS:
ABSTRACT SUBSTANCE:
SIMILAR WORDS:
DISTINCTION:
中身 emphasizes the actual material/substance inside, while 内容 is more abstract (content of a book, meeting, etc.).
Related Words
Contrast:
内容 (content (abstract))