(이)랑: And / With — The Casual Spoken One

(이)랑 is the casual spoken and / with between nouns.

우리말샘 lists 이랑 after consonant nouns for doing something together and for linking nouns as equals. Classroom Korean pairs vowel-final nouns with 랑. This is the page 과/와, 하고 already pointed at — the casual end of the noun-linker spectrum.

What it does — two English jobs, one particle

Korean does not always split “and” vs “with” the way English wants:

커피랑 빵 주세요.         coffee and bread
친구랑 영화 봤어요.       with a friend
저랑 같이 사러 가요.     with me (go buy…)

Context chooses the English gloss. The Korean job is the same particle family.

Forms

*빵랑 and *저이랑 are the regular beginner swaps. Hear the batchim.

Register — why writing rejects it

Messaging and friends: (이)랑 is natural. Newspaper lists and careful essays: prefer 과/와. When unsure in polite speech, 하고 is the safe middle — details on 과/와, 하고.

When to use — and when to switch

Use (이)랑 with peers, in banmal/soft 해요 chat, for companions and shopping lists.

Switch to 하고 or 과/와 when the room gets formal, or when you are writing.

Same-unit partner: -으러 / -러 packs purpose-of-going into lines like 저랑 같이 사러 가요 — companion + purpose on one outing.

Practice rule: if you would text it to a friend, (이)랑 is probably right. If you would put it in a report, it probably isn’t.