Curve Shapes

SS - put small graphic infront of the text, similar to (charts > chart types)

Rising - (or Positive) Yields are at "average levels" and the curve gently slopes upwards as maturity increases. Sometimes also referred as the Normal yield curve.
Flat -
Humped - Yields are high with the curve rising to a peak in the medium-term and then lower rates in the long-term.
Inverted - (or Negative) Yields are at historically high levels, with short-term rates substantially higher than long-term rates.