What are the physical features of a noun?

Nouns don't have physical features in the way that a person or object does. They are words, and words are abstract concepts.

Here's what you might be thinking about:

* Grammatical features: Nouns have grammatical features that help us understand their role in a sentence. These include:

* Number: Singular (one) or plural (more than one) - e.g., "dog" vs. "dogs"

* Gender: Some languages have grammatical genders for nouns - e.g., "la mesa" (feminine) vs. "el libro" (masculine) in Spanish

* Case: Some languages use different forms of nouns depending on their function in the sentence (e.g., subject, object).

* Semantic features: These are the underlying meanings associated with nouns. For example, the noun "dog" has features like "animal," "mammal," "domesticated," "furry," etc.

* Lexical features: These are the specific characteristics of a particular noun, such as its pronunciation, spelling, and etymology.

So, while nouns don't have physical features like a nose or eyes, they do have features that define their grammatical and semantic function within a language.