Formal or informalTell or inform
Everyday: speech and messages.
Tell Aarav the practice is cancelled.
Formal: letters, notices, official emails.
We are pleased to inform you that you have been selected.
Remember: Tell a friend; inform a parent by letter. Note: inform someone "of" or "about" something.
Short lessonFormal or informalWe speak differently to friends, teachers and officials. This change in style is called register.