* Nominative: This is a grammatical case, usually used for the subject of a sentence. For example, in "The cat sat on the mat," "cat" is in the nominative case.
* Normative: This refers to something that sets a standard or rule. For example, "Normative values" are those that are widely accepted as good or right.
If you can provide more context, I might be able to help you figure out which word you meant.