David Tennant has such subtle ways of inflection that change Angel to a term of endearment, to a pet name, to your mother using your full name after she found out your scratched the car
He always uses Angel as an endearment except when he his voice cracks saying, “He’s an Angel I know.” He’s not walking around calling other angels “angel.”
When you call someone by their job title to keep the relationship from becoming personal. But the relationship becomes personal anyway, and the nickname sticks.
As someone that watched the show I can confirm that Aziraphale is in fact, an Angel, but he isn't any Angel, he's Crowley's Angel, personalized celestial soulmate
i love that in the french version not only does crowley call azi “mon ange (my angel)” multiple times, he also calls him “l’angelot “, which means angel or little angel but also cherub.
I love that it starts as a snide comment that slowly morphs into a pet name. He loves his angel and we need things to go right in S3. EVERYONE NEEDS TO HEAL.
In the official subtitles, most of the time when Crowley refers to Aziraphale the capitalisation of angel is different, like its a PET NAME FOR HIM as opposed to stating what Az is.