Correct

准备 vs 预备

/ zhǔnbèi vs yùbèi /
Strokes

Formula

1
做准备 (make preparations)
2
有准备 (be well prepared)
3
进行准备 (be preparing)
4
做了充分的准备 (well-prepared)
5
准备得很充分 (well-prepared)
6
预备队 (reserve force)
7
预备役 (reserve duty)
8
预备党员 (probationary party member)
9
预备性会谈 (preparatory talks)

Definition

准备 and 预备 both are Verb, which means [prepare].

Example

准备 and 预备 both mean "to plan or arrange beforehand". Sometimes the two words are interchangeable.
1
zhǔnbèi
准备
  
(
bèi
预备
  
)
kǎo
ge
哪个
xué
大学
  
?

Which university do you prefer?

2
Zhǔrén
主人
jīng
已经
wéi
rén
客人
zhǔnbèi
准备
  
(
bèi
预备
  
)
hǎo
le
fángjiān
房间
  

The host has prepared the room for the guests.

准备 stresses the conditions and purpose considered beforehand; 预备 stresses the procedure.
3
Zhè
jiàn
shì
hái
méi
zuòhǎo
做好
zhǔnbèi
准备
  

I am not ready for it.

4
Zhè
zhǐ
shì
bèi
预备
huì
会议
  
,
zhèngshì
正式
huì
会议
jiāng
zài
liǎng
zhōu
hòu
xíng
举行
  

This is only a preparatory meeting.The formal one will be held in two weeks.

准备 and 预备, their fixed collocations.
1) When there are such differences the two words are not interchangeable.

2) When applied to general plans or preparation, they are interchangeable.
做准备 (make preparations) 有准备 (be well prepared) 进行准备 (be preparing) 做了充分的准备 (well-prepared) 准备得很充分 (well-prepared) 预备队 (reserve force) 预备役 (reserve duty) 预备党员 (probationary party member) 预备性会谈 (preparatory talks)
5
men
他们
wéi
zhè
这次
dēngshān
登山
huódòng
活动
  
,
jīng
已经
zuòhǎo
做好
le
chōngfèn
充分
de
zhì
物质
jīngshén
精神
zhǔnbèi
准备
  

They have been well prepared in material and spirits for the climbing.

6
Xuéxiào
学校
bān
一般
zài
第一
jiē
shàng
上课
10
10
fēnzhōng
分钟
zhīqián
之前
  
,
xiān
bèi
预备
líng
  

Generally speaking,the preparatory bell rings ten minutes before the beginning of the first class in the school.

Related

预备准备