The plural form of world is worlds.
The plural form of the noun world is worlds.The plural form of the noun wife is wives.
The plural form of the world ditch is ditches.
The plural form of the noun 'capital' is capitals.Example: The fashion capitals of the world are Paris and Milan.
The word team is singular; the plural form is teams.
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 "I" is "we."
The plural form of "was" is "were."
"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.