To defer your studies means to delay the commencement of your program to a future semester (i.e. to delay your first day in a program to a future semester).
If you’re an international student and you want to defer your studies you should:
Informally, many students use the word “defer” to mean “take a temporary break from studies”.
Strictly speaking, if you have started your program and you want to take a break at the end of a semester, the correct word to use is “interruption”. It’s important to understand the distinction between deferring studies and interrupting studies, because they refer to quite different administrative processes.
Dropping a course or dropping out of a program are called "withdrawing". You can withdraw from a single course or several courses – or from your program.
You must seek advice from your faculty before taking an interruption or withdrawing from a course or from your program. Changing your study load can affect your student visa. Academic or financial penalties might also apply.