44058
I'm trying to understand the nuanced differences between 伴う and 同伴する.

My research ([Weblio:伴う](http://ejje.weblio.jp/content/%E4%BC%B4%E3%81%86),
[Weblio:同伴](http://ejje.weblio.jp/content/%E5%90%8C%E4%BC%B4)) has led me to
believe that:

**同伴{どうはん}する** means "a person accompanies another person", and not much
outside that scope.

**伴{ともな}う** is the more general "to accompany, to follow along with" which may
be used to talk about anything, such as wind accompanying a storm, or one
problem accompanying another.

So, my questions are as follows:

  1. Are the above assumptions correct? Are there any other nuances worth pointing out?
  2. Does 同伴する refer to one person accompanying another exclusively, or can it be anything that accompanies a person? (ex: An aura of depression follows him wherever he goes.) 
  3. Is there any case where 伴う can not be used to mean "to accompany"? (Note: I'm asking for patently wrong cases here, not cases where 同伴する or some other word might be better.)
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2017-03-03T21:31:46.940
44056
2020-03-12T01:21:44.820
2020-03-12T01:21:44.820
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question
meaning word-choice nuances wago-and-kango
Differences of 伴う and 同伴する
1. > _Are the above assumptions correct? Are there any other nuances worth pointing out?_

Almost correct, but one important thing is that the verbs are two-faceted
words.

    * A が B **に** 同伴する／伴う → _A accompanies B_
    * A が B **を** 同伴する／伴う → _A is accompanied by B_
  2. > _Does 同伴する refer to one person accompanying another exclusively, or can it be anything that accompanies a person? (ex: An aura of depression follows him wherever he goes.)_

Yes, people only, accompany **ing** or accompani **ed** by another. However,
compounds such as 同伴者 usually only mean "accompany **ing** person".

  3. > _Is there any case where 伴う can not be used to mean "to accompany"? (Note: I'm asking for patently wrong cases here, not cases where 同伴する or some other word might be better.)_

First, _accompany_ in music context ("to perform another part") is another
word in Japanese: 伴奏【ばんそう】する (cf. 伴奏 _accompaniment_ ).

Second, 伴う is not usable when you put A and B together.

> _accompanied their advice with a warning_ ([Merriam-
> Webster](https://www.merriam-webster.com/dictionary/accompany))  
>  → 警告に助言を **添える** 、助言 **とともに** 警告する (though I think this situation can be
> handled by a single word, 忠告する)

The word is also inappropriate when the subject doesn't change or make any
move.

> _the pictures that accompany the text_ (again Merriam-Webster)  
>  → 文章に **添えられた** 絵／写真、文章に **付随する** 絵／写真
>
> cf. _the replacement of pictures that accompanies the text revision_  
>  → 本文の改訂に **伴う** 絵／写真の差し替え、本文の改訂に **付随する** 絵／写真の差し替え
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2017-03-04T01:19:21.847
44058
2017-03-04T01:19:21.847
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answer