瓷器 

Pinyin: cí qì 
Meaning：china; figuline; porcelain; stoneware
Sentence: A piece of china breaks easily. 瓷器容易打碎。 

More: 

瓷：

Pinyin: cí 
Meaning: porcelain
Radical: 瓦 
Stokes: 10 
Traditional: 瓷 
Common words/Phrase:
瓷碗cwǎn [china bowl] 
裂变瓷lièbiàncí [crackled porcelain] 
青瓷 qīngcí[blue china; celadon] 
细瓷xìcí [fine china]

器： 

Pinyin: qì
Meaning: Utensil; tool; device
Radical: 口
Stokes: 16
Traditional: 器
Common words/Phrase: 
器材[qì cái] 【equipment; material】
器械[qì xiè] 【specialty or precision equipment; apparatus】
器官[qì guān] 【organ; apparatus】
器具[qì jù] 【implement; ware】
器重[qì zhòng] 【regard highly】