Porcelain tile is denser heavier and more impervious to water and thus is a better choice than ceramic tile for outdoor locations although outdoor use is recommended only in mild climates.
Ceramic vs porcelan tiles.
If you install ceramic tiles you got to be prepared to protect them from stains.
Porcelain tile has excellent resistance to heat making it a good choice for countertop surfaces.
They are more comfortable to walk on than porcelain.
Also you got to keep bleach and other strong cleaning formulas nearby.
Ceramic tiles are kiln fired at a lower temperature than porcelain tiles making them less dense softer and more porous.
Porcelain floor tile is harder and denser.
When it comes to strength ceramics are not as good as porcelain.
Ceramic floor tiles however tend to have a softer surface.