Royal Canadian Mounted Police vs Mounties

Royal Canadian Mounted Police and Mounties both are nouns.

Word	Noun	Adjective	Verb	Adverb
Royal Canadian Mounted Police	Yes	No	No	No
Mounties	Yes	No	No	No

As nouns, Royal Canadian Mounted Police and Mounties are synonyms defined as:

Royal Canadian Mounted Police and Mounties: the federal police force of Canada

Other synonyms of Royal Canadian Mounted Police include RCMP.

Royal Canadian Mounted Police (noun)	Mounties (noun)
the federal police force of Canada	the federal police force of Canada