Yes, the word 'traffic jam' is a noun, a singular, common, compound, concrete noun; a word for the group of vehicles waiting behind something that is blocking the road; a word for a thing.
The noun jam is a singular, common, concrete noun; a word for a food, a word for a thing. The word jam is also a verb.
Actually, jam is a sweet spread or preserve made from fruit and sugar boiled to a thick consistency.Jam is both a verb and a noun:The noun jam, a singular, common noun, is a word for a fruit spread or someone, something wedged into a tight space, or a line of blocked vehicles, concrete nouns; a jam is also a word for a difficult situation, or an informal gathering of musicians playing music, abstract nouns.The verb jam is push into a space with some force, to block something through crowding, such as traffic, an electric or data signal, etc. or to play music in an informal group.
The word marmalade is a noun, a common, concrete noun; a word for a type of jam, a word for a thing.
No, the word 'jammed' is the past participle, past tense of the verb to jam. The past participle of the verb also functions as an adjective.The word 'jam' is both a verb and a noun.The noun 'jam' is a common noun, a general word for an instance of something impeding motion or a thing wedged in a way that is difficult or impossible to remove; a general word for a difficult situation or predicament; a general word for a preserve made from whole fruit boiled with sugar; a word for any jam of any kind.The noun form of the verb to jam is the gerund, jamming.
The Beijing traffic jam (60 mile traffic jam for 10 days)
a traffic jam is called 'un bouchon (de circulation)' in French.
Traffic jam
Traffic jam
The duration of Traffic Jam - film - is 2.02 hours.
A Traffic Jam
The term "traffic jam" is generally considered countable because you can have one traffic jam, two traffic jams, and so on. Each occurrence of a traffic jam can be counted individually. However, when referring to traffic congestion in general, it might be used in an uncountable sense, but this is less common.