clerk vs tallyman

clerk and tallyman both are nouns.

Word	Noun	Adjective	Verb	Adverb
clerk	Yes	No	Yes	No
tallyman	Yes	No	No	No

As nouns, tallyman is a hyponym of clerk; that is, tallyman is a word with a more specific, narrower meaning than clerk:

clerk: an employee who performs clerical work (e.g., keeps records or accounts)
tallyman: one who keeps a tally of quantity or weight of goods produced or shipped or received

clerk (noun)	tallyman (noun)
an employee who performs clerical work (e.g., keeps records or accounts)	one who keeps a tally of quantity or weight of goods produced or shipped or received
a salesperson in a store	one who sells goods on the installment plan

clerk (verb)	tallyman (verb)
work as a clerk, as in the legal business