This is the 5044th most frequent Japanese word.
菊川
"菊川" (Kikukawa) is a Japanese name meaning "Chrysanthemum River."
In this sentence, 菊川 (Kikukawa) refers to the station name. It is used as a proper noun and a geographical location.
菊川駅は東京メトロの駅です。
Kikukawa Station is a Tokyo Metro station.
Here, 菊川 is used as a surname, highlighting its function as a personal name in Japanese culture.
彼の名字は菊川です。
His surname is Kikukawa.
In this context, 菊川 refers to a place, likely a district or town. It's used to denote physical scenery associated with the location.