I am using Sellacious in the US and we do not use terms like "Landmark" or "District" in our addresses here.  An address consists of  a street address, like "12324 Main Street", sometimes an apartment #, then a city, like "Los Angeles", a state, like "California" (CA) and a zip code of 5 digits with a sometimes plus 4 more.
So my question is this: In Sellacious, which of Landmark or District would be the equivalent of the CITY in the US?  I can then change the language files accordingly.  I considered using language overrides but there are way too many occurrences of either of those words to be feasible.