Sometimes prepositions are used with cause, reason or purpose.
Have a look-
- Mother does for our good.
- She always cares for us.
- Banti apologized for his misdeeds.
- She repented for her misdeed.
- Judge punished him for his crime.
- He died of cholera.
- I was sure of success.
- He is aware of dogs.
- Be aware of dogs.
- I am suffering from headache.
- She suffered from knee ache