Hi B-A. Both your versions are passive. One is a question; the other is a statement. Active voice would be, "I call them 'kangarettes.' " The active voice question would be, "Do you call them 'kanagarettes?' " "What do you call a baby kangaroo?"
hanuman - The past participle of "to call" used as an adjective would be, "Most of these people have not been called. I'm g