Amortization is what you are actually paying per year against your loan. You can get a mortgage with a term of 10, 15 or 30 years. You pay each month and the principal decreases until it’s paid off. The payments don’t change but at the beginning of the term, most of the payment is going toward interest. By the end of the term, that’s flipped and you’ll be paying down the mortgage principal.
Fixed rates and adjustable rates are the most common types of mortgages. Over 90% of US mortgages are fixed rate loans. A second mortgage works the same as a first mortgage, allowing a borrower to take out a lump sum of money and then make monthly payments to pay it back. You can use the second mortgage to make repairs on your house, to consolidate your bills, or to help with the down payment on the first mortgage to avoid needing to pay PMI.
Many mortgages allow you to ‘port’ them to a new property, so you may be able to move your existing mortgage across to your next home. However, you will effectively have to apply for your mortgage again, so you’ll need to satisfy your lender that monthly payments remain affordable. It’ll be down to them to decide whether they’re happy to allow you to transfer your current deal over to your new property. Bear in mind too that there may be fees to pay for moving your mortgage.