What is another word for "clerkship"?

Roget's Thesaurus (1911) lists these synonyms for "clerkship": accession, agency, agent, agentship, and, appointment, assignment, attorney, authority, bird, brevet, captive, capture, charge, charter, close, commission, consignee, consignment, coronation, custody, delegate, delegation, deputation, deputy, designation, diploma, doing, durance, embassy, enthronement, errand, exequatur, hostage, inauguration, inmate, installation, investiture, jail, key.