Constellation or zodiac sign
Are you looking for the word "Nativity"? That's one, I hope it helps.
Enrol
character, sign
Call sign?
yes
I have listed this as part of another answer here: What_is_sign_for_king_in_asl
New Birth
Another word for enrolls could be sign- up or matriculation, or enlist.
sign, prediction, warning, prenotion
Placard , notice , poster or sign .
sympton
Mercedes logo, maybe