| NOUN | substance | chemical irritant | a substance producing irritation |
|---|
| Meaning | A substance producing irritation. | |
|---|---|---|
| Narrower | capsaicin | colorless pungent crystalline compound derived from capsicum |
| gingerol | derived from ginger | |
| isothiocyanate | A family of compounds derived from horseradish and radishes and onions and mustards | |
| piperin, piperine | derived from pepper (especially black pepper) | |
| Broader | substance | A particular kind or species of matter with uniform properties |
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