ー in katakana
コーラー？コーラ？
パーティ？パーティー？
ピザ？ピーザー？ピーザ？ピザー？

I'm not sure where to use the line for some words in katakana. Please help me if you know and if there are any more similar ones to keep note off, please tell me too:) Thank you!

Question

ー in katakana
コーラー？コーラ？
パーティ？パーティー？
ピザ？ピーザー？ピーザ？ピザー？

I'm not sure where to use the line for some words in katakana. Please help me if you know and if there are any more similar ones to keep note off, please tell me too:) Thank you!

Answer

コーラ、パーティー、ピザ。

Try to listen carefully how the words are pronounced: the ー indicates a long vowel.

Answer

It's used whenever a vowel is elongated in a word~