My English blog

These two words have the same pronunciation

The adjective principal means :main, most important

e.g.: What's your principal reason for wanting to be a doctor

The noun principal means : headmistress, usually in Britain, of a school for adults

e.g. : If you want to leave early you'll have to ask the principal

A principle is a scientific law or a moral rule

e.g. : Newton discovered the principle of universal gravitation