冰块

Pinyin: bīng kuài
Meaning：Ice block; ice
Sentence: 一大块冰从整个大冰块上断裂开来。A large piece of ice broke away from the main block.

More:

冰：

Pinyin: bīng
Meaning: ice
Radical: 冫
Stokes: 6
Traditional: 冰
Common words/Phrase:
冰淇凌 [bīn g qí líng] 【ice cream 】
干冰 [gān bīng] 【dry ice】
滑旱冰 [huá hàn bīng] 【skating】
冰冷 [bīng lěng] 【cold】

块：

Pinyin: kuài
Meaning: Hump; piece; chunk
Radical: 土
Stokes: 7
Traditional: 塊
Common words/Phrase:
块茎 [kuài jīng] 【tuber】
块矿 [kuài kuàng] 【lump ore】
块根 [kuài gēn] 【earthnut】
块煤 [ku i m i] 【range coal】
石块 [shí kuài] 【block】