This is the 6627th most frequent Japanese word.
ナガサワ
"ナガサワ" (Nagasawa) is a Japanese surname and place name.
In this example, 'ナガサワ' refers to the name of a location, specifically a train station.
ナガサワという駅の近くに住んでいます。
I live near a station called Nagasawa.
In this sentence, 'ナガサワ' is used as a proper noun to refer to a person's name, with 'さん' appended to indicate politeness.
ナガサワさんは明日イベントに参加します。
Mr. Nagasawa will attend the event tomorrow.
Here, 'ナガサワ' is mentioned as a family name, used in a general context to represent any family with this surname.