What is the difference between a triple point and a critical point on a phase diagram?

The triple point of a substance (such as water) is the temperature and pressure where its solid, liquid and gaseous forms can all coexist.

The triple point of water is 273.16 K and 611.73 Pa.

https://wiki2.org/en/Triple_point+Milds.2

The critical point is the temperature and pressure where a liquid and its vapour co-exist. The critical point of water occurs at 647.096 K and 22.064 MPa.

https://wiki2.org/en/Critical_point_(thermodynamics)+Milds.2