Whenever you say something like “This radical is the same as the kanji” (= no further explanation), could you add a link to that kanji? A lot of the time, I don’t remember the mnemonic that was used with the kanji and would like to refresh my memory
I know there is a search function, but I must have searched for those kanji a thousand times and I’m sure there are many people like that… that’s a lot of wasted time collectively.
One example because it just popped up, radical Chapter 章
Note that duplicity also carries the meaning of being twofold or double. So while the act of bad faith is probably the most common use of duplicity you will encounter, it can also mean something non-pejorative and closer to duplicate, which the OP seems to be indicating in the title.
I am well aware that the two words have an etymological link, but I am also aware of their common usage, which is what I was addressing, in the hopes that OP would edit the title for clarification; that has not happened.
I see where you are coming from, however, OP not using the common usage is not wrong in and of itself. It’s just a different way of saying the same thing. I do get that you are trying for OP to change it in hopes that maybe it would clear up those who wish to help that may not be aware of the uncommon usage. So here’s to hoping OP will edit for clarification.