I'm in planning stages of a war fantasy story that is based on specific historical events in Burma, and I've kind of hit a wall when thinking about how close to make the fantasy world to the real world, especially in terms of naming places/objects.
Random example: a 'longyi' is a standard form of dress for men - a piece of material that wraps around their lower half.
So, in my fantasy world, can I use this word 'longyi'? (While also giving some description of it for readers who wouldn't know the term). Does it make sense to have a Burmese word in a fantasy world where there is no Burma in existence? If not, what would be the best alternative: creating a completely new name for a similar item, or just using a generic name (such as 'wrap')?
A similar question goes for place names, although of course the real names will not be used; but should the fantasy nation have a completely invented name that separates it from its real name; or should it be some iteration of its real name - like Birmania, for example?
I'm especially interested in asking these questions because this is not my history or my culture; though I have lived in the country for a few years and know about it quite well, I have seen a lot of criticisms lately for some works that deal with other cultures (cough cough JK Rowling). I kind of don't like to ask this question because I think, its fantasy, its fiction...but I do think its worth asking the question at least.
Even appropriation-related issues aside, which option is best for bringing realism to the work while also setting it apart as a fantasy? I realise the answers are probably quite subjective but I'm interested in hearing your thoughts!
A couple of edits - thanks for the suggestion of a similar question, though that one refers more to using real people's names, which I don't intend to do; I will have characters who reflect certain groups and maybe individuals but not explicitly.
Second edit is another example of the 'kukri', I curved knife that was used at the time. Again would using the word kukri make sense in the fantasy world? I suppose it wouldn't make much sense not to use it, it is a very specific object, but it may also pull people too far out of the fantasy.