downtrend

As nouns the difference between uptrend and downtrend

is that uptrend is an upward trend, or an upturn while downtrend is any gradual movement towards a lower state or value.

As an adverb downward

is toward a lower level, whether in physical space, in a hierarchy, or in amount or value.

As an adjective downward

is moving or sloping down.

As a noun downtrend is

any gradual movement towards a lower state or value.

As nouns the difference between downfall and downtrend

is that downfall is a precipitous decline in fortune; death or rapid deterioration, as in status or wealth while downtrend is any gradual movement towards a lower state or value.

As a verb downfall

is to fall down; deteriorate; decline.