shorthand typist vs stenographer

shorthand typist and stenographer both are nouns.

Word	Noun	Adjective	Verb	Adverb
shorthand typist	Yes	No	No	No
stenographer	Yes	No	No	No

As nouns, shorthand typist and stenographer are synonyms defined as:

shorthand typist and stenographer: someone skilled in the transcription of speech (especially dictation)

Other synonyms of shorthand typist include amanuensis.

shorthand typist (noun)	stenographer (noun)
someone skilled in the transcription of speech (especially dictation)	someone skilled in the transcription of speech (especially dictation)