発音記号上違いがあるんだけれど、自分にはどっちがどっちか区別に自信なしorz。
vault - Definition and pronunciation | Oxford Advanced Learner's Dictionary
volt - Definition and pronunciation | Oxford Advanced Learner's Dictionary
子供に聞いたら区別ありとのこと。ただしイギリス発音を聞かせたら間違えた、ははは。
ちなみに調べてたらこんな記事が。
High Voltage claims that Coke has been marketing their drink Vault, which has a similar sounding name as their beverage Volt, as a way to basically shut them down.
まあネイティブでも発音が似ていて混同しやすいのは確かな様子。
