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I hear both fairly often but i still can't tell the difference and when to use
what.

I found this
[answer](http://answers.yahoo.com/question/index?qid=20101008134342AARLeT1) in
yahoo answers but it seems like there is a difference in opinion (?) - not
sure, didn't understand some of the answers.

I usually hear omoidashita (思い出した) when someone suddenly recalls something.
And I am sure I heard oboetenaino? (覚えてないの) a few times and to me it seems
like the person is saying: "you don't remember do you?".

So it seems to me that they both mean the same thing. Is this correct?

For example:

```

    Person1: 覚えてないの?
    Person2: 思い出せない
    
```

Is this valid?

So I guess my questions are:

  * Do they mean the same thing?
  * Are they interchangeable?
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question
word-choice
「覚える」と「思い出す」の違い - what's the difference of oboeru and omoidasu?
```

    Person1: 覚えてないの?
    Person2: 思い出せない
    
```

Yes, correct.

```

    Person2: 彼の名前なんだったっけ？
    Person1: 覚えてないの？
    Person2: 思い出せない。
    
    Person2: What was his name?
    Person1: Don't you remember?
    Person2: I can't remember.
    
```

  * Do they mean the same thing? 

    * 覚える like a Memorize, 思う like a Think. to look alike but be different.
  * Are they interchangeable? 

    * In my opinion, they are not.

Some cases

```

    覚えていますか？=> Do you still remember?
    思い出せますか？=> Can you remember that?
    
    * cannot express with 覚える *
    その歌を思い出します。=> I recall the song.
    
    このカードを覚えておいてください。=> Please memorize this card.
    * cannot express with 思い出す *    
    
    
    覚えた！だから思い出せます。
    I memorized it! So now I can recall it.
    
```
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answer
覚える remember or "keep remembering"; 思い出す recall. These two words are supposed
to illustrate the difference in meaning, not politeness.

Interesting tidbit: 覚える comes from 思ふ via 思はゆ, with ゆ being an alternative to
(ら)る, the 自発・受身・可能の助動詞. So 覚える would literally be "able to think" because you
have remembered it. On the other hand, 思い出す would be "to come out with a
thought."

Rather than one example where they are similar, let's consider two sentences
that shows how they're different:

> 誕生日、覚えていてくれたんですか!? 嬉しい！  
>  _She is happy because he did not forget her birthday._ ("kept remembering")
>
> 突如、彼は思い出した。今日は葵の誕生日だったということを。  
>  _He had forgotten it and remembered (recalled) it just now._

Now try to exchange the two expressions:

> その瞬間、彼は覚えた。  
>  _Makes no sense._

What you could say is

> その瞬間、体当たりを覚えた。  
>  It learned tackle in that instant.

Here it means 身に付ける, 体得する. What comes before を覚えた is some skill or feeling
(酒の味を覚える[=知る]). The point is that you learn it and then "keep remembering" it.

> 記憶喪失とかなんとか言われてあたしは……あたしは… すごく心配……本当に、誕生日、思い出してくれたんですか？

Alright, this sounds a bit construed, but I hope it gets the point across. It
came to back to his mind at that moment.

More examples:

> あのときのことは今もよく覚えている
>
> この本を彼に返すことを覚えておいてね
>
> 犬が芸を覚える
>
> 新しい仕事に生き甲斐を覚える
>
> 楽しかった昔のことを忽然と思い出す
>
> 約束を急に思い出す
>
> 祖父が死んだ日のことをぼんやりと思い出す
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answer
Being a Japanese who learned English, I was also confused with this same
problem! I think the source of confusion is seen in the previous post:

```

    Person2: 彼の名前なんだったっけ？
    Person1: 覚えてないの？
    Person2: 思い出せない。
    
    Person2: What was his name?
    Person1: Don't you remember?
    Person2: I can't remember."
    
```

Yes, this is good translation **from natural dialog to natural one**. But
"覚えてないの？" is translated to "Don't you remember?", which is the cause of
confusion.

If you transliterate(*) the second J sentence to weird English: (*: Here I
mean word by word translation.)

```

    Person1: 覚えてないの？
    Person1: Haven't you memorized it? or Don't you have it memorized?
    
```

If you transliterate the second E sentence to an unnatural response in J:

```

    Person1: Don't you remember?
    Person1: 思い出せないの？
    
```

According to dictionary.com, remember has multiple meanings.

```

    "1. to recall to the mind by an act or effort of memory; think of again: I'll try to remember the exact date."
    "2. to retain in the memory; keep in mind; remain aware of: Remember your appointment with the dentist."
    
```

Here , 1 is 思い出す; 2 is 覚える.

I think confusion is sometimes caused by the difference between the
translation of natural dialogs and the word-to-word translation.
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answer