Synonyms of apprenticeship
probationProbation is a period of time during which someone is judging your character and ability while you work, in order to see if you are suitable for that type of work.
• The appointment will be subject to a six-month term of probation.
Thesaurus for apprenticeship from the Collins English Thesaurus
Someone who has an apprenticeship works for a fixed period of time for a person who has a particular skill in order to learn the skill. Apprenticeship is the system of learning a skill like this.