Hotdogs are a great party food.
Meaning: This sentence suggests that hotdogs are a suitable food item for parties.
Choice of Words: Hotdogs are a type of sausage. Great means very good. Party is a social gathering of people. Food is something you eat. When you put them together, "Hotdogs are a great party food" means that hotdogs are a good choice of food to serve at a social gathering.
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