The key difference between a Treasury bond and a Treasury note

is their maturity period:

• Treasury Notes (T-Notes): These have maturities ranging from 2 to 10 years and pay interest every six months.

• Treasury Bonds (T-Bonds): These have longer maturities, typically 20 or 30 years, and also pay interest every six months.

Both are low-risk investments backed by the U.S. government, but bonds generally offer higher yields due to their longer duration. Please see the interesting relationship between 30 yr fixed and 10 yr treasury.

Source: Average 30 Year Fixed Mortgage Rates vs Treasury Prices