1343 stations, and the places on their pages. A name, or a code like G-01.
JR East is a different railway from the subway. Tokyo Metro and Toei run the subway; JR runs its own lines across and around it, mostly above ground.
Your Suica or PASMO works on both. Tap in and out the same way and the right fare is taken, so an IC card is the simplest way to move between the two.
Paper subway tickets and subway day passes are not accepted, and a journey that uses both railways pays a subway fare and a JR fare rather than one combined fare.
Higashi-Kanagawa 東神奈川 Terminus
Oguchi 大口
Shin-Yokohama 新横浜
Kozukue 小机
Kamoi 鴨居
Tokaichiba 十日市場
Naruse 成瀬
Kobuchi 古淵
Fuchinobe 淵野辺
Yabe 矢部
Sagamihara 相模原
Aihara 相原
Hachiojiminamino 八王子みなみ野
Katakura 片倉