Yes. When objects are in orbit around each other, there is a strong pull of gravity between them. For example, we commonly say that the Moon is in orbit around the Earth. However, the Moon pulls back on the Earth as well. This changes the Earth a little. One way we see this happening is the ocean tides.
An annuity is a long term investment that is issued by an insurance company designed to help protect you from the risk of outliving your income. Through annuitization, your purchase payments (what you contribute) are converted into periodic payments that can last for life.
A deferred annuity would better be defined as a category of annuities rather than a type of annuity. All annuities can be categorized as either deferred or immediate. When income payments are scheduled to begin is the determining factor as to which category an annuity belongs. There are many different types of annuities that fall underneath the broader deferred annuity category. A deferred annuity has two phases: the accumulation phase, where you let your money grow for a period of time, and the payout phase.