Writing, Sentence
The kanji and the radical are the same, so remembering the meaning of this kanji is as simple as making sure you know the radical for writing first! If you know the radical, you know this kanji means writing as well.
Make sure you know those radicals, yo!
ぶん, もん
ふみ
None
This kanji has more than one important reading you need to learn! But don't worry, here's a mnemonic to help you: You always put writing on your buns (ぶん) to keep them from getting eaten by the bun monster (もん). What kind of writing? Usually it's just an X to show the monster these buns are off-limits. (In fact, it kind of looks like the X part in 文. Hmm…)
Imagine writing a big X (or even a big 文) on all your buns, then showing them to the bun monster. Watch as he turns and goes at the sight of the writing, all disappointed. Not today, bun monster.