Whirligig and Whirlwind

Whirligig noun - A conical child's plaything tapering to a steel point on which it can be made to spin.

Whirlwind and whirligig are semantically related. In some cases you can use "Whirlwind" instead the word "Whirligig" as a noun or an adjective.

Whirlwind adjective - Moving, proceeding, or acting with great speed.

Whirligig and whirlwind are semantically related. Sometimes you can use "Whirligig" instead an adjective "Whirlwind".