what you know
experience
knowledge
background
abilities developed by practice
talents
skills
qualities
qualifications
strong natural abilities
skills
qualities
talents
qualifications
your past in general (where you come from, where you studied, etc)
knowledge
background
experience
(generally positive) characteristics
talents
skills
qualities
qualifications
what you've done in your life
experience
background
knowledge
certificates which show you have learned something
skills
qualities
qualifications
talents