This is the 8800th most frequent Japanese word.
東北新幹線
The "Tōhoku Shinkansen" is a high-speed rail line in Japan connecting Tokyo to the Tōhoku region.
In this sentence, '東北新幹線' (Tohoku Shinkansen) is used to specify the subject, the particular high-speed railway being discussed.
東北新幹線は東京と仙台を結ぶ重要な鉄道です。
The Tohoku Shinkansen is an important railway connecting Tokyo and Sendai.
Here, '東北新幹線' serves to specify the means of transportation that was utilized.
昨日、東北新幹線で盛岡まで行きました。
Yesterday, I traveled to Morioka using the Tohoku Shinkansen.
In this case, '東北新幹線' refers to the service of the high-speed train, highlighting its operational status.