| What charcoal does |
| Stick to a surface |
| Condense, in a way |
| Gather on a surface |
| Collect on a surface |
| Condense on a surface |
| Accumulate, chemically |
| Accumulate on a surface |
| Collect in condensed form |
| Act on like a carbon filter |
| Gather in a condensed layer |
| Collect on a surface, as a gas |
| Accumulate gases on the surface |
| Gather on a surface, chemically |
| Collect liquid in condensed form |
| Gather chemically in a thin layer |
| Condense on a surface, chemically |
| Gather on a surface, in chemistry |
| Gather on the surface, chemically |
| Collect condensed gas on a surface |
| Collect in condensed form, as gases |
| Condense on a surface, in chemistry |
| Gather in a thin layer of molecules |
| Accumulate on the surface, like molecules |
| Accumulate on a surface, as a dissolved substance |