紙
A very common kanji that you see everywhere and easy to remember: on the left hand side "thread/wire" and the right hand side "family name". This character is also used a lot as a single character with a meaning exactly as in English: paper.
Words/compounds
Example sentences
手紙
お手紙確かに拝受いたしました。
I acknowledged the receipt of your letter.
I acknowledged the receipt of your letter.
 
お手紙確かに落手いたしました。
I hereby beg to acknowledge your letter.
I hereby beg to acknowledge your letter.
用紙
このアンケート用紙に必要事項を書き込み、当方にお送り下さい。
Please fill out this questionnaire and send it to us.
Please fill out this questionnaire and send it to us.
裏表紙
私は日記の裏表紙に彼の住所を走り書きした。
I scribbled down his address in the back of my diary.
I scribbled down his address in the back of my diary.
再生紙
この教科書って再生紙でできてんだ。
You know this textbook is made of recycled paper.
You know this textbook is made of recycled paper.
紙飛行機
紙飛行機だよ。
I made a paper plane.
I made a paper plane.
 
紙飛行機はゆっくり地上に落ちた。
The paper plane fell slowly to earth.
The paper plane fell slowly to earth.