Active Immunity is natural.
Passive Immunity is maternal.
Active Immunity from Vaccination.
Passive Immunity is Artificial.
Passive Immunity:
Does not require previous exposure to a disease agent
Takes effect immediately
Does not last long (up to a few months)
Active Immunity is produced inside of the body, whereas passive immunity is introduced from outside of the body.
Active Immunity is from direct infection and vaccination.
Passive Immunity is from Breast milk, Injection, Mother to baby through the placenta.
Active Immunity takes effect over time (typically several weeks).
Passive Immunity takes effect immediately.
Active Immunity's length of efficacy is Long-term to lifelong.
Passive Immunity is short-term.
Active Immunity is produced by memory cells, Passive Immunity is not.
Hope this was insightful and enough information.
