By the way, “religious” also is not a well-defined term, as far as I understand it; every person will tell you something different about who counts as religious in their eyes. If you want, you could say that there is no one who keeps all the commandments, and there is no one who has not fulfilled even a single commandment—not even accidentally. For example, if a coin fell from his pocket and a poor person picked it up, or if he slept on the Sabbath and enjoyed it, and so on. Here you could argue about whether commandments require intent or not, and things like that. “Secular” is also not a well-defined term, though maybe a bit more than “religious.” For example, is someone who keeps “all the commandments” except the Sabbath religious? What about someone who keeps the Sabbath but does not put on tefillin, or the reverse? Is someone who wears a kippah religious? Someone who does not, not? And so on. Haredi, by contrast, is a well-defined term!