Are there characters in which the radicals are the same but the position changes the meaning?
Same meaning:

崕 = 崖 (ㄧㄚˊ / yá) = cliff; precipice

峰 = 峯 (ㄈㄥ / fēng) = peak; summit

毗 = 毘 (ㄆㄧˊ / pí) = to adjoin; to border on

群 = 羣 (ㄑㄩㄣˊ / qún) = group; crowd

飃 = 飄 (ㄆㄧㄠ / piāo) = to float

鄰 = 隣 (ㄌㄧㄣˊ / lín) = neighbor; adjacent

Different meanings:

早 (ㄗㄠˇ / zǎo) = early; morning
旪 (ㄒㄧㄝˊ / xié) = 協 = agreement

吟 (ㄧㄣˊ / yín) = to chant; to recite
含 (ㄏㄢˊ / hán) = to contain; to keep in mouth

旱 (ㄏㄢˋ / hàn) = drought; dry
旰 (ㄍㄢˋ / gàn) = 傍晚 = sunset; dusk

岳 (ㄩㄝˋ/ yuè) = mountain; peak
岴 (ㄑㄩ/ qū) = 嶇 = rugged; rough

星 (ㄒㄧㄥ / xīng) = star
甠 (ㄑㄧㄥˊ / qíng) = 晴 = clear (weather)

啻 (ㄔˋ / chì) = only
啼 (ㄊㄧˊ / tí) = cry; crow

There are many many others.