Nominative case (abbreviated as NOM) is the grammatical case of nouns and pronouns that marks the subject of a verb. That's why it may be called a subjective case. Nominative case in Nûrlâm has no special ending for nouns, and it is the default dictionary form. However pronouns have completely distinct forms for subject and object use, so see an article about them for more information.
Nominative case is also used in compound predicates with nouns.