adverb
Describes doing two or more things in alternation, switching back and forth.
日本語と英語をちゃんぽんに話す。
I speak Japanese and English alternately.
adverb
all together; mixed together
Describes mixing different things together, often in a jumbled or haphazard way.
いろんなおかずをちゃんぽんに盛り付けた。
I served various side dishes all mixed together on one plate.