Harish goes to school in the bus - Is noun?

The noun in the sentence "Harish goes to school in the bus" is Harish.

Here's why:

* Noun: A noun is a word that names a person, place, thing, or idea.

* Harish: This is the name of a person, making it a noun.

The other words in the sentence are verbs, prepositions, articles, and adjectives, not nouns.