Generally, the title examination isn't ordered until there has been mortgage commitment. The reason is that people (buyers) don't want to pay for a title examination if the mortgage isn't approved. However, some lenders give a preliminary commitment that depends on the title being free of defects. In that case they want the title report a couple of weeks before the closing is scheduled.

A mortgage commitment is a signed statement from a bank guaranteeing that they will loan you up to a set amount of money. This can then be used to prove to a potential seller that you have been "pre-qualified" for a loan. It does not normally state the interest rate, just the top amount the bank is willing to loan you.

Mortgage Protection Insurance can become very important. Your mortgage is likely to be your biggest single monthly commitment. Mortgage Payment Protection Insurance is designed to meet your mortgage repayments and safe-guard your home if you aren't able to work because of unemployment, accident. For more read the source link below

A pre approval only approves the party to the transaction as qualifying for that amount while a commitment is a bona fide contract indicating that the lender will finance the amount of the loan for both the party and the subject property.

People sometimes use that as a term to mean a loan (mortgage, vehicle) because when you sign the loan papers you are making a commit (of a financial nature) to pay them (being the bank) there money back