lexical difficulties (1)

borrow (v): it means to get sth, or the use of sth, on the understanding that it is to be returned. borrowing is like taking.

lend (v): it means to give sb the use of sth for a period of time , on the understanding that it is to be returned. lending is like giving.

start and begin can can be used with no real difference

commence is a formal word for the announcement of meetings , concerts, etc.

big is a conversational word.

large is a formal word.

big also means very popular; successful, or very important.

ex) she is a very big name.