whistler vs whistling marmot

whistler and whistling marmot both are nouns.

Word	Noun	Adjective	Verb	Adverb
whistler	Yes	No	No	No
whistling marmot	Yes	No	No	No

As nouns, whistler and whistling marmot are synonyms defined as:

Other synonyms of whistler include hoary marmot, Marmota caligata.

whistler (noun)	whistling marmot (noun)
Australian and southeastern Asian birds with a melodious whistling call	large North American mountain marmot
large-headed swift-flying diving duck of Arctic regions
large North American mountain marmot
someone who makes a loud high sound