

私の意見は少し違うと思います。
これとそれは何が違うの?
国によって、習慣が違うことがあります。
"ちがう(違う)" is in the lesson "Adjectives 1" (Level 2), along with 15 other useful words. LinDuo has 180 topic lessons like this one, 2,379 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.