When I use という _to-iu_ , for example:

> これと同{おな}じ「草{くさ}」というものがここに生{は}えますか？  
>  _Kore to onaji “kusa” to-iu mono ga kokoni haemasu ka?_
>
> Does something like this so-called “grass” grow around here?

Should I replace いう for “申す _mōsu_ ” “申し上げる _mōshiageru_ ” or “おっしゃる _ossharu_
” if I use honorifics form?

Are these words interchangeable in all situations? If not, when do I use each?

-Jerbot
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2015-09-04T20:24:36.527
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question
word-choice synonyms honorifics word-requests subordinate-clauses
Should I use honorifics to say (言う 'iu') for subordinate clauses?
No, because it's not an action that you or the listener does. If anything, the
action is done by mankind and you don't need to respect mankind ;) Similarly
for e.g. `関西でよく食べられる明石焼をご存知ですか？`. Here, the verb `know` is changed to show
respect, but not the verb `eat`.

If the action is performed by a group you need to show respect, that's a
different story. E.g.

> 天皇陛下が好んで召し上がった饅頭はどれですか？  
>  社長がフロッピーと呼んでおられたのは何ですか？  
>  御社でお使いになっているソフトは何ですか？

Another exception is if you are a royalty or something (at least that's how
it's depicted in some films etc.)

> サンマと申すものを持って参れ

Here, mankind is below you so you change the verb.
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answer