What's the difference between submissive and easygoing?

Easy going isn't really submissive. It just means they wont make a big deal or fuss over little things. They are more relaxed and chill. That's not submissive though. If they feel strongly about something they will likely stand their ground-unless of course they are also submissive. A person can be both. Just because a person is easy going doesn't mean they are submissive. They can be but the two are not the same thing.