This is the 4805th most frequent Japanese word.
江釣子
"江釣子" (Ezuriko) is a place name in Japan, specifically in Iwate Prefecture.
In this sentence, the word 江釣子 refers to a location, likely a city or town, where the speaker resides.
私は江釣子に住んでいます。
I live in Etushi.
Here, 江釣子 is mentioned as a subject and refers to the name of a place whose historical attributes are being described.
江釣子の歴史はとても興味深いです。
The history of Etushi is very interesting.
In this sentence, 江釣子 is used to indicate the origin of a person or friend visiting the speaker.