The Latin word crimen (Eng. crime) has different forms in different cases. Note the genitive criminis. The following English words contain the Latin root crimen, criminis:
crime
criminal (noun and...
You have that backwards. "Terra" is the root word -- Latin for "earth" or "land." "Terrestrial" means of or on the land or earth.
This is also where we get "terra firma," firm earth; "terrier," a...