So, this question about Characteristics − Manga attributes is currently on-hold and I also give a vote close to this question, but when I think again, is this question really too broad?
I'll give you some points here:
- OP only ask for the differences on characteristics between a comic and a manga. In my understanding (I might be wrong), he asks about what are the differences between how the characters are drawn in a comic and manga. Not the difference between comics and a manga as a whole media.
- This question got a link to a question about What differentiates anime from regular cartoons? Compared with this, that question is way broader. And it's not a dupe, because while the question is related to each other, this question only asks about differences between how the characters are drawn (first point).
- Comics really varies around the world. This is basically everywhere except Japan. So it might be still too broad. So instead of asking a question about comics as general, this question might can be reworded with Western/American Comics compared with Japanese manga. But even with this, I still don't know how varies western comics are. I only know a few comics like Marvel, DC Comics and Disney. So, this might be a reason not to reopen this question.