British English (and American English?) sometimes uses stress to distinguish between nouns and verbs written the same way, eg. "record a record", "permit a perm

British English (and American English?) sometimes uses stress to distinguish between nouns and verbs written the same way, eg. "record a record", "permit a permit", "present a present". It's possible that "buffalo a buffalo" should ideally have this difference, but buffalo is so rare as a verb that the difference has been lost.