deputy vs deputy sheriff

deputy and deputy sheriff both are nouns.

Word	Noun	Adjective	Verb	Adverb
deputy	Yes	No	No	No
deputy sheriff	Yes	No	No	No

As nouns, deputy and deputy sheriff are synonyms defined as:

deputy and deputy sheriff: someone authorized to exercise the powers of sheriff in emergencies

deputy (noun)	deputy sheriff (noun)
an assistant with power to act when his superior is absent	someone authorized to exercise the powers of sheriff in emergencies
someone authorized to exercise the powers of sheriff in emergencies
a person appointed to represent or act on behalf of others
a member of the lower chamber of a legislative assembly (such as in France)