Exactly. For any loan (although mostly applicable to commercial) there are really three factors to consider:
1 - Amortization period. Over what period of time are the Principal & Interest periods calculated (eg; 15 year? 20 year? 30 year?)
2 - Loan term. Just because a loan is a 30 year amortization does not mean that it will be a 30 year term. Case in point, the loan I referenced above (20 year amortization/6 year term) means that payments are based on the 20 year amortization schedule, however the loan is "up" a 6 years, meaning either a balloon payment is due or I have to refinance before that.
3 - Rate. Interest rate - fixed or variable, and if variable, how soon and frequently does it change and what does it change based on?
For this particular loan, I neglected to mention that I pre-negotiated a guaranteed renewal/refinance at prevailing market rates, so basically, this loan can better be viewed as a 20 year amortization/TBD term/"variable rate" with the first adjustment (from the initial 4% to prevailing market rates) occurring at the 6 year mark.
Make sense?