This is the 4728th most frequent Japanese word.
有馬
"有馬" (Arima) is a Japanese surname or place name, often associated with the historic hot spring area, Arima Onsen.
Here, '有馬' refers to 'Arima,' the name of a specific location.
有馬温泉は日本の有名な温泉地です。
Arima Onsen is a famous hot spring area in Japan.
In this sentence, '有馬' serves as a family name.
有馬さんは旅行が趣味です。
Mr./Ms. Arima's hobby is traveling.
'有馬' in this case is used in its more literal sense, meaning 'to own a horse.'