Parnassus vs Mount Parnassus

Parnassus and Mount Parnassus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Parnassus	Yes	No	No	No
Mount Parnassus	Yes	No	No	No

As nouns, Parnassus and Mount Parnassus are synonyms defined as:

Parnassus and Mount Parnassus: (Greek mythology) a mountain in central Greece where (according to Greek mythology) the Muses lived; known as the mythological home of music and poetry

Other synonyms of Parnassus include Liakoura.

Parnassus (noun)	Mount Parnassus (noun)
(Greek mythology) a mountain in central Greece where (according to Greek mythology) the Muses lived; known as the mythological home of music and poetry	(Greek mythology) a mountain in central Greece where (according to Greek mythology) the Muses lived; known as the mythological home of music and poetry