jokes
The plural form of "joke" is "jokes." In English, regular nouns typically form their plural by adding "-s" or "-es" to the singular form. In this case, since "joke" is a regular noun, the plural is simply formed by adding an "-s" at the end.
Jokes is a noun (plural form of joke) and a verb (third person singular conjugation of joke).
Funny is an adjective, really only used as a noun in the informal sense - telling a joke is making a funny. Funnies is the plural.
There is no plural form. Do and Do not are verbs
The plural form of him, her, or it is them. (objective pronouns)
Bridges is the plural form of bridge.
The plural form of "is" is "are."
The plural form of "was" is "were."
The plural form of "I" is "we."
The plural form of mouth is mouths. The plural form of month is months. The Mounth is a range of hills in Scotland and does not have a plural form.
"Groceries" is the plural form of "grocery."
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.