“different / unusual” in Japanese is 異, read i, koto (い, こと). It is a Grade 6 Kyōiku kanji, taught in year 6 of Japanese elementary school, and appears in words such as 異文化 (a different culture).
What does 異 mean?
二人の意見は異なる。
Same sound, different character — the classic trap. Compare them side by side: