All basic words for directions (such as left, down, inside, etc.) are nouns in Nûrlâm. Locative cases' postpositions are used to express relative positions of objects or direction of their movement. For example the word “latr” means “bottom side”, it cannot be used as is to express that something is going down, so it should be put in allative case.

Some postpositions of locative cases already express position or direction by their own (no need to say “to the inside of the house” when you can just say “inside the house”), but in Nûrlâm they still cannot be used stand-alone without a noun.

In colloquial speech the more formal expressions with nouns may use the wrong cases: substitute Ablative case with Genitive, or use Allative and Illative cases interchangeably.

Some of the expressions described above are clunky. It's impossible to express relative adverbials (e.g. “go higher”) using expressions based on nouns. And so, like in English, which has some synonyms of directional words of Germanic and Romance origin, some shorter adverbs appeared in Nûrlâm. They can be used to describe static position or motion towards that direction.