vacancy
Word family
Synonym discussion
Sense: noun/2
These three words all refer to an available job but differ in formality and context. 'Opening' is the most general and informal term — you see it in everyday conversation and online job boards: 'They have an opening in the sales department.' 'Position' is more formal and suggests a specific role within a company's structure, making it common in official job titles and application forms: 'She applied for a senior research position at the university.' 'Post' is the most formal of the three, used mainly for government, academic, diplomatic, or military roles: 'The diplomatic post in Geneva has been vacant for months.' In practice, use 'opening' for casual job talk, 'position' for formal applications and job descriptions, and 'post' for institutional or official roles.
Common collocations
Etymology
'Vacancy' entered English in the late 14th century from Old French 'vacance' (meaning an empty space or vacant position). The French word came from Latin 'vacantia' (emptiness, vacancy), which derived from the verb 'vacāre' (to be empty, to be free). The meaning of an unoccupied job or position appeared in the early 1500s. The familiar hotel sign 'No Vacancy' became common in the early 1900s with the growth of automobile travel and roadside motels.