@SarahGen-- It's not your fault because I see even reputable sites and sources use pawpaw as the alternate name to papaya. This is definitely due to pawpaw fruit not being known as well as papaya.
Pawpaw is related to the Anonna family of fruits, like sugar-apple. This family of fruits is known for having lighter colored flesh that's sweet and creamy. Papaya is from a totally different and unrelated family.