Water has a density of 1000 kg/m3 by standard definition at its temperature of maximum density 3.98 Â°C and at 0% salinity. Scientists and engineers use water as a baseline for comparing the relative density of various materials. Water with a density of 1000 kg/m3 at 3.98 Â°C has a mass of 1000kg and a volume of 1 m3.
Spelt is a word. It is the past participle of spell. It is also a type of wheat, and therefore also a noun. It depends upon whether you are using British English (and Spelt is correct) or you are using American English.
Proper nouns are not generally counted as English terms except when accepted into the language as an eponym â such as GeigerâMÃ¼ller tube, or the English terms roentgen after Wilhelm RÃ¶ntgen, and biro after LÃ¡szlÃ³ BÃ­rÃ³, in which case any diacritical mark is often lost.