plantain, cavendish, banana peel

Wait, the user wrote: "switch words in format opt3. all words with 3 synonyms. Skip proper nouns." So perhaps each of the individual options in the switch (opt1, opt2, opt3) should be replaced with three synonyms. For example, if the input is banana, then each word within the switch should have three synonyms. So the output would be something like tropical fruit,pineapple,plantain? But that seems a bit forced. Alternatively, maybe each option is to be replaced by a trio of synonyms. But in the original example, maybe the switch is to be converted into a list of synonyms for each option. However, that could get messy. Let me re-express the instruction: the user wants the switch words (each option in the switch) to be replaced by three synonyms. So for grape, perhaps each word gets three synonyms, and the output is three lists. But the user might actually want to replace the entire switch with three synonyms, but that's not clear. Maybe the user wants each option to be a word with three synonyms, and the format remains as synonym3 for each original option. Wait, maybe not. Let me check the user's example again. They didn't provide examples, but their instruction says "output text only", which might mean they want the original switch phrases with their words replaced by three synonyms each.

Let me take the first example: grape. Are these proper nouns? Hmm, apple, banana, grape are common nouns, so they're okay. Their synonyms could be... apple is a type of fruit, so synonyms might be fruit, orchard, etc. Wait, but the user wants three different synonyms for each. Let me think again. Maybe for apple, synonyms are fruit, red fruit, or green fruit? Wait, that's not correct. Apple isn't a synonym for fruit; it's an instance. Maybe the user wants related words? Or maybe they want synonyms for the switch phrase as a whole. Wait, the instruction says "all words with 3 synonyms". So each word in the switch has to be replaced by three synonyms, but that might not make sense. Alternatively, the entire switch phrase is to be replaced with three synonyms. Hmm, that's unclear.

This is getting better. However, some of these terms are not direct synonyms. For example, 'dog breed' refers to a category, not a synonym of 'dog'. The user might actually want three direct synonyms. Maybe the user is confused, but I need to proceed with best guesses.

Grape synonyms: muscadine grape, concord grape, Thompson grape

Banana synonyms: plantain, cavendish banana, banana peel