垃圾 

Pinyin: lājī
Meaning：Trash; litter
Sentence: 苏看到到处是垃圾很苦恼。Sue was troubled to see trash everywhere.

More: 

垃： 

Pinyin: lā   
Meaning: Rubbish
Radical: 土
Stokes: 8
Traditional: 垃
Common words/Phrase:
垃圾箱 [lājīxiāng] 【dustbin】
垃圾邮件 [lājīyóujiàn] 【junk e-mail】
垃圾食品 [lājīshípǐn] 【junk food】

圾： 

Pinyin: jī 
Meaning: Rubbish; garbage; refuse
Radical: 土
Stokes: 6
Traditional: 圾
Common words/Phrase: 
百圾碎 [bǎijīsuì] 【hundredfold crackle】
除圾 [chújī] 【depolarization】
拉圾债券 [lājīzhàiquàn] 【junk bond】