whistling marmot vs whistler

whistling marmot and whistler both are nouns.

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

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

Other synonyms of whistling marmot include hoary marmot, Marmota caligata.

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