Translation guide
A frankfurter is a type of sausage, often called a 'hot dog' in American English. In Japanese, it's usually referred to by borrowed terms.
Referring to the sausage itself, typically served in a bun or as part of a meal.
The most common term, borrowed from German 'Frankfurter'. Used for the sausage, often in the context of 'frankfurter sausages' or 'hot dogs'.
I ate a frankfurter for breakfast.
Explicitly 'frankfurter sausage'. Used when clarity is needed, but slightly redundant in everyday speech.
This frankfurter sausage is juicy.
Often used for the complete dish (sausage in a bun), but can refer to the sausage itself, especially in casual contexts.
May imply the bun and condiments, not just the sausage.
I bought a hot dog at the stall.