In OE 9 parts of speech had already been distinguished:
| changeable | 1. Noun | Nominal Categories: Number, Case, Gender, Degrees of Comparison, Determination |
| 2. Adjective | ||
| 3. Pronoun | ||
| 4. Numeral | ||
| 5. Verb | Verbal Categories: Tense, Mood, Person, Number, Voice, Aspect, Order, Posteriority | |
| unchangeable | 6. Adverb(only Degrees of Comparison) | - |
| 7. Prepositions | - | |
| 8. Conjunctions | - | |
| 9. Interjections | - |
Below all notional parts of speech will be discussed, their categories described and the meanings of these categories stated as related to the Old English Period
Noun
Number –Singular (Sg) and Plural (Pl).
Gender –Masculine (M), Feminine (F), Neuter (N).
Case –Nominative (Nom) (agent), Genitive (Gen) (attribute), Dative (Dat) (instrument, indirect/prepositional object), Accusative (Acc) (recipient, direct/prepositionless object).