Terminology
The names of the mandolin family instruments vary between Europe and the United States. The instruments that are known in the USA as the mandola and the octave mandolin tend to be known in Great Britain and Ireland as the tenor mandola, the octave mandola, or the Irish bouzouki. Also, octave mandola is sometimes applied to what in the U.S. is a mandocello. In Europe outside the British isles, mandola is the larger GDAE tuned instrument while the smaller CGDA tuned one is known as alt-mandoline (i.e., alto mandolin), mandoliola or liola.
This geographic distinction is not crisp, and there are cases of each term being used in each country. Jimmy Moon, a Scottish luthier calls his version of the instrument by both names and Paul Shippey, an English luthier uses the term octave mandolin. Confusion will likely continue as the terms continue to be used interchangeably.
Read more about this topic: Octave Mandolin