different character; other character
Refers to a character that is not the same as another, often in the context of distinguishing kanji or kana.
This kanji is a different character, but the meaning is similar.
variant character; different written form
Used for a character that is a variant or alternative form of another, such as traditional/simplified or old/new forms.
「国」 and 「國」 are variant characters of each other.
different kanji with the same Japanese reading
homophony with different characters; heterography
different kanji with the same Japanese reading
Compound of 異 (i, 'different') + 字 (ji, 'character').