ゆうじん
friend
The formal way of saying it, friend with person bolted on. You ゆう and the same Jin じん, and the two of them have known each other since school: ゆうじん.
友達 ともだち is what you actually say out loud. 友人 is for writing, and for talking about somebody rather than to them.
This is one of 1,500 words in Emaki, a free spaced repetition trainer with a written mnemonic on every card.
Study 友人 in EmakiFree, no account needed. Your progress stays in your browser.
Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.