合 - Fit Together Like Two... Kanji?

Readings & Meanings:

あう

ゴウ

カッ

To fit, to be together

Compounds:

合 is used in pretty much everything. Here are just a few:

場合 ばあい

具合 ぐあい

意気投合 いきとうごう

Examples:

採用が決定した場合は、後日電話でお知らせします。

お腹の具合が悪い。

飲み屋で隣り会わせた奴と意気投合しちゃってさ、朝まで飲んじゃったよ。

Translations:

If we decide to hire you, we will let you know via phone in a few days.

I feel sick to my stomach. (lit., my stomach's condition is bad)

I got along so well with the guy sitting next to me at the pub that we ended up drinking together till dawn.
(copied directly from http://home.alc.co.jp/db/owa/s_kaydic?num_in=8&ctg_in=2)

Important:

If you want to say to your friend "Let's meet," this is not the あうyou're looking for.


My thanks to http://www.jlptstudy.com/2/index.html and http://www.thejapanesepage.com/kanji/kanji/a.htm for great JLPT sites with better navigation than I can manage here. Also to http://www.alc.co.jp/ for a great translation of that 4-kanji idiom example.