Re: a kind of twins
How do we call a kind of twins (human beings) whom were born with parts of their bodies, even organs attached. Surgeries always found unsuccessful to the majority of the cases.
Thanks.
"How do you call ...? means by what method do you get someone's attention.
With 'call', with the meaning you intend here, Ju, we use 'what'.
What do you call the kind of ...
With 'say/pronounce' we use 'how'.
"How do you say the kind of twins where ... "
Martha: How do you call your kids for lunch when they're all over the farm.
Jill: Oh, I use that big dinner bell on the porch. I got tired of yelling.
I believe that these types of twins are called Siamese Twins.
See also,
https://www.usingenglish.com/forum/ask-teacher/60074-how-call.html