What is the singular and plural form of a word?

Answer 1

if you mean the word "word" than

singular: word

Plural: words

if you are wondering what the singular and plural forms are, then singular is one (like cat) and plural is two or more (like cats)

Answer 2

The singular form of a word refers to one item, while the plural form refers to more than one. Plurals are typically formed by adding an "s" or "es" to the end of the word, though there are exceptions. For example, the singular form of "cat" is "cat" and the plural form is "cats."