Correct

增强 vs 加强

/ zēngqiáng vs jiāqiáng /
Strokes

Definition

增强 and 加强 both are Verbs, which means [to strengthen; to enhance].

Example

增强 and 加强 both mean "to strengthen", the object is mostly abstract things.
1) 增强 means "to enhance or strengthen the quality on the original base" and the object is usually a noun (eg. ① ②)

2) 加强 stresses the increase of strength or effect, and the object is mostly a verb (eg. ③④)
1
体育
duànliàn
锻炼
可以
zēngqiáng
增强
zhì
体质
  

Physical exercise can improve your health.

2
Zhè
kǎoshì
考试
chéng
成绩
cuò
不错
  
,
zēngqiáng
增强
le
xué
学习
de
xìnxīn
信心
  

The nice performance in this examination gives him more confidence in learning.

3
men
我们
yào
zài
quánguó
全国
jiāqiáng
加强
zhì
法制
jiào
教育
  

Legal education should be strengthened all over the country.

4
Xiànzài
现在
de
zhōngxuéshēng
中学生
zhěngtiān
整天
máng
忙于
xué
学习
  
,
shēn
身体
zhì
素质
biàn
普遍
xiàjiàng
下降
  
,
yìng
jiāqiáng
加强
体育
duànliàn
锻炼
  

The middle-school student is in growing poor health for he has been studying all day long. It's time for him to do more physical exercise to improve his health.

增强 and 加强 are interchangeable when the object is a Noun.
5
men
我们
yào
jiāqiáng
加强
  
(
zēngqiáng
增强
  
)
jué
自觉
xìng
  

We need to strengthen self-awareness.

6
men
他们
yào
jiāqiáng
加强
  
(
zēngqiáng
增强
  
)
zhì
法制
guānniàn
观念
  

They must strengthen the concept of the rule of law.

增强 and 加强 are interchangeable when the object is 团结, 影响, 建设, etc. which are both nouns and verbs.
7
Lǎoshī
老师
yào
jiāqiáng
加强
  
(
zēngqiáng
增强
  
)
duì
xuésheng
学生
de
yǐngxiǎng
影响力
  

Teachers should strengthen their influence on students.

8
Xuésheng
学生
men
yào
jiāqiáng
加强
  
(
zēngqiáng
增强
  
)
tuánjié
团结
  

Students need to strengthen unity.