General:
* Postpone: To delay or defer something.
* Postscript: A note added at the end of a letter or document.
* Posthumous: Occurring or published after someone's death.
* Postulate: To propose or assume something as a basis for reasoning.
* Posture: The position of the body.
Related to Location:
* Post office: A building where mail is collected and distributed.
* Post code: A series of letters and numbers used to identify a specific postal area.
* Post war: After a war.
* Post office box: A box rented from the post office for receiving mail.
Related to Time:
* Post-mortem: An examination of a body to determine the cause of death.
* Post-traumatic stress disorder: A mental health condition triggered by a traumatic event.
* Post-industrial: Relating to the period after the decline of traditional industries.
* Post-modern: Relating to a style or movement that emphasizes the rejection of traditional values and forms.
Other:
* Postgraduate: Relating to studies undertaken after a first degree.
* Post-it note: A small adhesive note.
* Post-natal: Relating to the period after childbirth.
* Post-operative: Relating to the period after a surgical operation.
* Post-doctoral: Relating to research or study undertaken after a doctorate degree.
This is not an exhaustive list, but it gives you a good starting point. The prefix "post" can be combined with many different words to create new words with specific meanings.