Sentence:  Tableware and toilets are both made of <WSD>porcelain</WSD>. 
Meaning of the word marked with <WSD> tags:  A hard white translucent ceramic, originally made by firing kaolin, quartz, and feldspar at high temperatures but now also inclusive of similar artificial materials; also often  such a material as a symbol of the fragility, elegance, etc. traditionally associated with porcelain goods.