Propaganda. There is no "s" in case you were wondering.
Propaganda is any form of media used to convince people of something. The word propaganda is a noun.
The most common form of propaganda involves advertising
Propaganda is a form of persuasion. That will often mislead one into believing something or doing something. Often in politics and advertising.
Propaganda conveys a message by utilizing the printed word in most cases. Propaganda can also come in the form of speeches which are heard on radio and television broadcasts.
The plural form for the singular noun prejudice is prejudices.
You cannot say "a propaganda", sorry. Propaganda is already plural, like media
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Bridges is the plural form of bridge.
"Beliefs" does not have a plural form, as it is already plural. Beliefs is the plural form of belief.
There is no plural form for the word, countries. This word itself is a plural.
"Groceries" is the plural form of "grocery."
The plural form of "meter" is "meters."
The plural form of the demonstrative pronoun 'that' is those.
The noun 'propaganda' is an uncountable noun, a type of aggregate noun, a word representing an indefinite number of elements or parts. The noun 'propaganda' has no singular form.
The plural form for the noun sergeant is sergeants; the plural possessive form is sergeants'.
It has no plural form.
The plural form of rung is rungs.