Similar, but Not the Same

What do you do when all of the player characters in a group essentially have the same Ability, such as a group of Pirates, or Knights, or Ghost Hunters? In many role-playing games, such designations would be occupations and the individuals would be differentiated by long lists of skills. In Omnia, Abilities are already collections of skills and areas of knowledge, so player characters are differentiated by a) adjectives added to the Ability they have common and b) their other Abilities. In the first case, the adjective could modify the Ability by describing a significant trait, specialization, style, outlook, or cultural perspective. In the second case, a character's other Abilities could influence a character's approach to the primary Ability or contribute to success in fulfilling the objectives of the primary Ability.

I may need to provide examples in the future.