Modifiers matching observer:

• objective,
• trained,
• careful,
• naive,
• foreign,
• concerned,
• interested,
• professional,
• influential,
• casual,
• outside,
• external,
• dedicated,
• unofficial,
• special,
• everyday,
• inexperienced,
• experienced,
• impartial,
• independent,
• social,
• primary,
• key,
• lay,
• skilled,
• responsible,
• familiar,
• contemporary,
• knowledgeable,

Simple categories matching trained:

• woman,
• individual,
• professional,
• people,
• personnel,
• person,
• troops,
• user,
• supervisor,
• worker,
• adviser,
• staff,
• intellectual,
• specialist,
• employee,
• operator,
• group,
• doctor,
• scientist,
• dentist,
• animal,
• mediator,
• researcher,
• educator,
• physician,
• unit,
• clientele,
• expert,
• practitioner,
• interpreter,
• agent,
• technician,
• observer,
• artist,
• advocate,
• therapist,
• volunteer,
• adult,
• works,