One is an offense that exists within the subject's mind, and the other is an invasion into the person's body and possessions, thus involving more than just his mind. For example, if someone wears a T-shirt with a message that some find displeasing, that is an offense, since whether one is pleased or displeased depends on one's personal viewpoint. In contrast, if one person shoots a bullet into another person's body, that is an unwelcomed invasion. For the universal ethic, only unwelcomed invasions are evil, while mere offenses are morally neutral. Also, acts which only affect yourself are either neutral or good, but not evil, since there is no invasion into another's domain.
Acts are evil if they coercively harm others as invasions.
All other acts are neutral. A society has complete liberty or freedom if its laws prohibit and punish evil as prescribed by the universal ethic, and if any act which is good or neutral is allowed but not required. We have a property right to our own bodies and lives, since if some control others, this violates the premise of equality and becomes an invasion. This self-ownership right implies a property right to our labor and the products of our labor. The premise of equality implies that all persons have an equal property right to the benefits of nature other than our own bodies.