There are grammatical words in the four grammatical treatises of the Codex
Wormianus. For example from the First Grammatical Treatise:

samhljóðandi = consonant (sam-, hljóð, -andi)
raddarstafr = vowel (rödd, stafr)

And from the Third Grammatical Treatise:

fornafn = pronoun (for-, nafn)
samtenging = conjunction (sam-, tengja, -ing)
fyrirsetning = preposition (fyrir, setja, -ing)

As you can see most of the words are closely modelled on the Latin words.

Kveðja,
Haukur

> Does Old Norse have names for terms such as Nominative, Dative,
> Accoustive and Genitive? I assume they would have words for more basic
> terms such as Noun, Adjective etc.? If you know of some of the terms I
> would be interested in seeing them :)
>
> -Seb