The document discusses various categories of English nouns, including:
1. Gender categories such as masculine, feminine, personal, and neuter nouns. Gender in English is a semantic rather than grammatical category.
2. Number categories of singular and plural expressed through suffixes like -s. Number corresponds to notions of individuality vs. discreteness.
3. Case categories debated as possessingive vs. nominative and common cases, or as lost altogether in English's development.
4. Determinacy categories of definite vs. indefinite expressed through definite and indefinite articles introducing old vs. new information.