clerk vs clerkship

clerk and clerkship both are nouns.

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

clerk (noun)	clerkship (noun)
an employee who performs clerical work (e.g., keeps records or accounts)	the job of clerk
a salesperson in a store

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