deskman vs station keeper

deskman and station keeper both are nouns.

Word	Noun	Adjective	Verb	Adverb
deskman	Yes	No	No	No
station keeper	Yes	No	No	No

As nouns, deskman and station keeper are synonyms defined as:

deskman and station keeper: the police sergeant on duty in a police station

Other synonyms of deskman include desk sergeant.

deskman (noun)	station keeper (noun)
the police sergeant on duty in a police station	the police sergeant on duty in a police station