(あいだ)

あいだ
noun
between, interval
1. between (space)
The space or gap between two things or people.
Between you and me.
There's a park between the station and the school.
A book had fallen between the desk and the wall.
You can see the ocean through the gap between the trees.
The cat was hiding between the bookshelf and the wall, so it took time to find it.
2. during, while (time)
A period of time during which something happens.
Please be quiet during class.
It rained while I was sleeping.
I swam every day during summer vacation.
I was reading a book while riding the train.
Please turn off your mobile phone during the meeting. Thank you for your cooperation.
3. relationship between
The relationship or connection between parties.
Did something happen between you two?
Things got bad between me and my friend.
Trust is important between parents and children.
Discussions have begun between the countries.
It's normal to use polite language between teachers and students, but this has been changing recently.

(あいだ) expresses space between things, duration of time, or relationships between people.

PATTERNS:

  • AとBの(あいだ): between A and B (space)
  • [noun]の(あいだ): during [noun] (time)
  • [verb-ている](あいだ): while [verb-ing]
  • 二人(ふたり)(あいだ): between the two (relationship)

READINGS:

  • (あいだ): between, during, while
  • (かん): interval, used in compounds (時間(じかん), 空間(くうかん))
  • (): pause, timing, room

(あいだ) VS (うち)に:
(あいだ)に emphasizes duration throughout; (うち)に emphasizes completing within a time limit.