| Word | Definitions | Synonyms |
|---|---|---|
| acantha | (noun) any sharply pointed projection | Synonyms: spine, spur |
| coryphantha | (noun) a cactus of the genus Coryphantha | - |
| maltha | (noun) a thick black tar intermediate between petroleum and asphalt | Synonyms: mineral tar |
| naphtha | (noun) any of various volatile flammable liquid hydrocarbon mixtures; used chiefly as solvents | - |