The job or function of a word is what gives the label for its part of speech. English has eight parts of speech which are:
An adjective is a word that tells about a noun. It answers the question what kind or how many.
The small baby smiled. (what kind)
She carried some books. (how many)
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21 is the smallest number.