What is another word for vault end?
Pronunciation: [vˈɒlt ˈɛnd] (IPA) 
When it comes to finding synonyms for the term "vault end," one can consider several options depending on their specific context. For instance, words like arched gateway, portal, doorframe, entrance, or exit can be used interchangeably. Additionally, other words like threshold, doorway, and gateway can also be used to indicate the end or beginning of an arched or vaulted structure. Other related words that can be used in such a context include arch, dome, and alcove. These synonyms can add some level of variety and richness to writing, making it more engaging and informative to the reader or listener.
