whirler vs whirling dervish

whirler and whirling dervish both are nouns.

Word	Noun	Adjective	Verb	Adverb
whirler	Yes	No	No	No
whirling dervish	Yes	No	No	No

As nouns, whirler and whirling dervish are synonyms defined as:

whirler and whirling dervish: a dervish whose actions include ecstatic dancing and whirling

whirler (noun)	whirling dervish (noun)
a revolving mechanism	a dervish whose actions include ecstatic dancing and whirling
a dervish whose actions include ecstatic dancing and whirling