St. Elias Mountains vs Saint Elias Mountains

St. Elias Mountains and Saint Elias Mountains both are nouns.

Word	Noun	Adjective	Verb	Adverb
St. Elias Mountains	Yes	No	No	No
Saint Elias Mountains	Yes	No	No	No

As nouns, St. Elias Mountains and Saint Elias Mountains are synonyms defined as:

St. Elias Mountains and Saint Elias Mountains: a range of mountains between Alaska and the Yukon territory

Other synonyms of St. Elias Mountains include St. Elias Range.

St. Elias Mountains (noun)	Saint Elias Mountains (noun)
a range of mountains between Alaska and the Yukon territory	a range of mountains between Alaska and the Yukon territory