You see a row of cars lined up neatly. Are they stuck in traffic? Nope. They're train cars. Congratulations, you've found a train!

You learned 電車 means "train," but it technically just refers to electric ones. On the other hand, 列車 is the broader, all-trains-welcome term. Diesel? Steam? Fancy long-distance express? All covered. But 列車 sounds more formal, so while 電車 is an everyday word, you may come across 列車 more often in writing or in the official descriptions used by railway companies.

This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well. Just be sure to note the れつ reading, which gets changed to れっ.