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