A brand audit is a comprehensive examination of a brand across all its touchpoints.
The Dictionary of Brand
Brand experience is the totality of all sensations, feelings, thoughts, and actions evoked by a brand.
Brand identity is the cumulative expression of a brand to target audiences.
Brand strategy is an articulation of the ideas upon which a brand is built and/or the plan for systematically expressing those ideas through identity and brand experience(s).
Brand personality is a set of human personality traits ascribed to a brand.