How are "サ変名詞" and "サ変接続" different?


I can't figure-out why certain words are categorized as サ変接続 such as

> 発表{はっぴょう}  
>  機能{きのう}  
>  仮想{かそう}

All those words are definitely サ変名詞. So, what do those words have that also
make them サ変接続? What would be some words that are exclusively サ変接続 and not
also サ変名詞?

Perhaps is サ変名詞 really just short-hand for a word that can be (名詞 + サ変接続)?

**NOTES**  
I am using the [Kuromoji Japanese tokenizer](http://www.atilika.org/). Part of
the metadata for a word/token is the part of speech. Here is a snippet of
output from tokenizing a newspaper article. I decided to display the reading
and part of speech:

> ...  
>  発表 --> ハッピョウ --> 名詞,サ変接続, _,_  
>  など --> ナド --> 助詞,副助詞, _,_  
>  新 --> シン --> 接頭詞,名詞接続, _,_  
>  機能 --> キノウ --> 名詞,サ変接続, _,_  
>  を --> ヲ --> 助詞,格助詞,一般,*  
>  導入 --> ドウニュウ --> 名詞,サ変接続, _,_  
>  仮想 --> カソウ --> 名詞,サ変接続, _,_  
>  現実 --> ゲンジツ --> 名詞,一般, _,_  
>  ヘッド --> ヘッド --> 名詞,一般, _,_  
>  ...

Actually... I just noticed I mistakenly said 'サ変接続詞' instead of just 'サ変接続'.
Even so, サ変名詞 _seem_ to act just like サ変接続?




I think that you are overthinking things here.

Simply put:

> サ変名詞{へんめいし} ＝ サ変接続{へんせつぞく}する名詞{めいし}

サ変名詞 refers to a noun that can function as a verb by attaching the verb 「する」
to it.

The three nouns that you listed (発表、機能 and 仮想) are good examples of サ変名詞. They
all become verbs just by adding 「する」 at the end.

Note that サ変名詞 include MANY katakana words such as
アピール、デート、エンジョイ、リラックス、コーディネート, etc. That some of those are already verbs in
their original language is completely irrelevant here because we are
discussing Japanese, not English.

(The learners should note that if you have to add 「する」 to form verbs out of
nouns, those nouns would have to be loan words most of the time in the first
place. Loan words, of course, include those borrowed from Chinese. **Original
Japanese verbs are already in verb forms without adding 「する」 or anything** ,
are they not? Think of みる、いく、たべる、かく、うごく, etc.)

As you know, every conjugated form of 「する」 starts with a サ行{ぎょう}-syllable --
しない、しよう、せず、させる、される、すれば、しろ、せよ. This is what 「サ変{へん}」 means -- the changes (in
the first syllables) within the サ行 in the conjugations of 「する」.

Thus, サ変接続 simply refers to the **_connecting of a noun to a form of 「する」_**.

サ変名詞 is a noun that becomes a verb by サ変接続.




I think that you are overthinking things here.

Simply put:

> サ変名詞{へんめいし} ＝ サ変接続{へんせつぞく}する名詞{めいし}

サ変名詞 refers to a noun that can function as a verb by attaching the verb 「する」
to it.

The three nouns that you listed (発表、機能 and 仮想) are good examples of サ変名詞. They
all become verbs just by adding 「する」 at the end.

Note that サ変名詞 include MANY katakana words such as
アピール、デート、エンジョイ、リラックス、コーディネート, etc. That some of those are already verbs in
their original language is completely irrelevant here because we are
discussing Japanese, not English.

(The learners should note that if you have to add 「する」 to form verbs out of
nouns, those nouns would have to be loan words most of the time in the first
place. Loan words, of course, include those borrowed from Chinese. **Original
Japanese verbs are already in verb forms without adding 「する」 or anything** ,
are they not? Think of みる、いく、たべる、かく、うごく, etc.)

As you know, every conjugated form of 「する」 starts with a サ行{ぎょう}-syllable --
しない、しよう、せず、させる、される、すれば、しろ、せよ. This is what 「サ変{へん}」 means -- the changes (in
the first syllables) within the サ行 in the conjugations of 「する」.

Thus, サ変接続 simply refers to the **_connecting of a noun to a form of 「する」_**.

サ変名詞 is a noun that becomes a verb by サ変接続.

