Employment vacancy
An employment vacancy (job opening) is the the employment that lacks the employee now or would possibly lack the employee in some future.
Classifications
The vacancy might be (a) funded and available right now, (b) sought for the candidate pipeline; hiring of pipeline candidates is contingent on some circumstance, for instance, awarding a contract, (c) fictionally created to research the job market of potential employment candidates and create or update their database, if the need unexpectedly emerges. Those employment candidates who are found through that research might be included in the pipeline as well.