The Six of Swords is Air (knowledge, concepts, decisions) related to the element Water (connections, mood, art). It can represent culture and cultural knowledge. It is not limited to the realms of "high" culture or pop culture. Occasions like pubic competitions or a performances, visiting museums or receptions, or the release of a highly anticipated book are can all be symbolized in this card.
It may also represent the kind of cultural knowledge which helps people to connect with one another, or etiquette and taboos to keep in mind to get along with others.
The Abstract Six of Swords is abstract Air (understanding, certainty, belief, personal distance) related to the element Water (mood, emotion, connection, love). This card can represent being emotionally guarded or repressed, or emotionally secretive, out of a sense that there could be consequences for indicating how one truly feels. Alternatively it could mean suppressing certain emotions in order to keep them from being in control.
It may also be indicative of interpersonal barriers, and the inability for people to be fully honest about themselves. It could indicate that there may be consequences for honesty, or perceptions of ill will.