Noun - any of the category of words used to designate a person, place, thing, idea, quality, or action, such as David, London, apple, privacy, arrival. Nouns may be singular or plural. A proper noun begins with a capital letter (e.g., Washington, Anna, American Airlines), whereas a common noun begins in lowercase (e.g., city, girl, airline).
Countable and uncountable nouns
There are some nouns that are uncountable in English but often countable in other languages.
accommodation advice baggage behavior chaos furniture information luck news progress traffic work
Remember! – you cannot use a/an with them (you cannot say an information, an advice) and they are not normally plural ( we do not say advices, informations)