They operate in somewhat different domains - numpy is to numerical data as pyarrow is to dataframe data. This means Arrow has strings, maps, nested types, etc.

They operate in somewhat different domains - numpy is to numerical data as pyarrow is to dataframe data. This means Arrow has strings, maps, nested types, etc. Note that I compared to pyarrow and not Arrow - Arrow refers to the arrangement of bytes in memory and isn’t tied to Python or anything.