what is the adjective in sentence "Sam sees a yellow bus"

yellow

the adjective would be yellow,a word to define a noun

The adjective is yellow, because it describes a noun, bus.

In the sentence "Sam sees a yellow bus," the adjective is "yellow." An adjective is a word that describes or modifies a noun. In this case, "yellow" describes the noun "bus." To identify the adjectives in a sentence, you can follow these steps:

1. Identify the nouns in the sentence. In this case, we have two nouns: "Sam" and "bus."
2. Look for words that give more information about the nouns. These words are likely to be adjectives. In this sentence, the word "yellow" describes the noun "bus," so it is the adjective.

Remember, adjectives can come before or after the noun they describe. In this case, "yellow" comes before the noun "bus" and tells us the color of the bus.