Answer:
1. Fricative.
2. Briton.
3. Celts.
Explanation:
1. Fricative: a sound produced by forcing air over the lips (as in 'f'), teeth (as in 'th'), or tongue (as in the German pronunciation of 'Bach'). Therefore, it has to do phonetics.
2. Briton: ancient people of the British Isles. These group of people were known to be in existence from the time of the Roman conquest. Also, the Britons spoke the Celtic language.
3. Celts: the people or language of ancient England. These were one of the ancient people who lived in Western Europe and their language is known as Celtic language. Also, they were referred to as Celtae by the Romans.
