Rise and raise, say and tell, ill and sick
Rise and raise
The price of oil is rising.
(The verb ‘rise’ is not followed by an object.)
The merchants are raising the price of oil.
(The verb ‘rise’ is followed by an object.)
Say and tell
‘Say’ refers to any type of speech.
He said, “Good morning”.
‘Tell’ is followed by the person receiving the information.
He told her to smile.
Ill and sick
I feel ill (British English)
I feel sick (American English)