This is the 1776th most frequent Japanese word.
佐野
"佐野" (Sano) is a Japanese surname and place name.
In this sentence, "佐野" is a surname referring to Mr. Sano, and "さん" is an honorific suffix.
佐野さんは昨日、駅で私を見つけました。
Mr. Sano found me at the station yesterday.
Here, "佐野" is used as part of the proper noun "佐野市" (Sano City), indicating a specific city.
この地図によると、佐野市はここから西にあります。
According to this map, Sano City is west from here.
In this case, "佐野" is discussed as a typical Japanese surname found commonly in Japan.