gustnado

As nouns the difference between whirlwind and gustnado

is that whirlwind is a violent windstorm of limited extent, as the tornado, characterized by an inward spiral motion of the air with an upward current in the center; a vortex of air. It usually has a rapid progressive motion while gustnado is a specific type of short-lived, low-level rotating cloud that can form in a severe thunderstorm.

As an adjective whirlwind

is rapid and minimal: a whirlwind tour, a whirlwind guide.

Dustdevil is likely misspelled.

Dustdevil has no English definition.

As a noun gustnado

is a specific type of short-lived, low-level rotating cloud that can form in a severe thunderstorm.

As nouns the difference between thunderstorm and gustnado

is that thunderstorm is a storm consisting of thunder and lightning produced by a cumulonimbus, usually accompanied with heavy rain, wind, and sometimes hail; and in rarer cases sleet, freezing rain, or snow while gustnado is a specific type of short-lived, low-level rotating cloud that can form in a severe thunderstorm.

As a proper noun cloud

is .

As a noun gustnado is

a specific type of short-lived, low-level rotating cloud that can form in a severe thunderstorm.