concern, matter
| AFFAIR |
| Word | Clue |
|---|---|
| DIRT | unclean matter |
| FOAM | form of matter |
| MASS | Matter, material |
| STUFF | matter |
| BUTANE | alkane with four carbon atoms |
| VACUUM | space that is empty of matter |
| BIOLOGY | The study of all life or living matter |
| SAWDUST | matter |
| SUBJECT | matter, topic |
| INTEREST | concern |
| SUBSTANCE | Physical matter |
| CONNOISSEUR | subject-matter expert |
| DECOMPOSITION | breaking down of living matter |
| INTEREST | concern |
| HALL | concert or exhibition |