Correct

隔墙

/ gé qiáng / 
Strokes

Example

As a Noun

partition; partition wall

1
Fángjiān
房间
yòng
用
géqiáng
隔墙
gé
隔
chéng
成
sān
三
jiān
间
  
。

The room is partitioned into three sections.

2
Bōli
玻璃
  
/
mùbǎn
木板
  
/
shuǐní
水泥
géqiáng
隔墙

glass/wood/cement partition wall

3
Dǎtōng
打通
liǎng
两
gè
个
xiǎo
小
fángjiān
房间
zhījiān
之间
de
的
géqiáng
隔墙

knock through between the two small rooms

As a Verb

be separated by a wall

4
Gé
隔
qiáng
墙
ér
而
jū
居

be next-door neighbours