"The name Pawpaw or Papaw, first recorded in print in English in 1598,[8] originally meant the giant herb Carica papaya or its fruit (as it still commonly does in many English-speaking communities, including Australia, New Zealand, and South Africa). According to Douglas Harper's Online Etymology Dictionary, it began to be used [presumably in North America] "from 1760 to designate the papaw tree" [meaning not Carica papaya but Asimina triloba]."
So the original pawpaw is papaya, and the American pawpaw is the imposter.
The Google image search you linked to is the pawpaw or papaya, it goes under both name.
The funny thing is that I've actually used this example at work as a rare case of an Australia/US localization issue, but totally forgot about HNs global audience when I made this post.
Yep, I see now how the flesh and seeds are similar to a Custard Apple. I’ve eaten those fresh from the farm in Norther New South Whales and liked them. Had limited success with store bought ones elsewhere in Australia.
Funny how we both forgot about internet search localisation!
Even Yahoo can get long tail search right, which is a pretty low bar. Though, Qwant seems to be the most well rounded search engine, both Yahoo and DuckDuckGo have unpolished edge cases that have turned me off over the years.