Where does “Avaruo” come from?

Avaruo (Esperanto) comes from Rarotongan Avarua, from Rarotongan rua, from Proto-Eastern Polynesian rua, from Proto-Nuclear Polynesian rua, from Proto-Polynesian rua, from Proto-Oceanic rua, from Proto-Eastern Malayo-Polynesian duha, from Proto-Central-Eastern Malayo-Polynesian duha — two.

Ancestry of “Avaruo”, step by step

StepLanguageWordMeaning
1RarotonganAvaruatwo harbors
2Rarotonganruatwo
3Proto-Eastern Polynesianrua
4Proto-Nuclear Polynesianrua
5Proto-Polynesianruatwo
6Proto-Oceanicruatwo
7Proto-Eastern Malayo-Polynesianduha
8Proto-Central-Eastern Malayo-Polynesianduha
9Proto-Malayo-Polynesianduhatwo
10Proto-Austronesian*duha
11Proto-AustronesianduSatwo
Every word from Proto-Austronesian duSa