1.
substitute, replacement
Something or someone that takes the place of another.
代わり functions both as a noun meaning "substitute" or "replacement" and as part of key grammatical patterns meaning "instead of."
KEY PATTERNS:
- 〜の代わりに: instead of ~, in place of ~
- その代わり: in exchange for that, but on the other hand
- 代わりに: instead (used adverbially)
COMMON EXPRESSIONS:
- 代わりを探す: to look for a replacement
- 代わりを務める: to serve as a substitute
- お代わり: a refill or second helping (polite; used in restaurants)
RELATED:
- 代わる (自動詞): to take the place of, to be replaced
- 代える (他動詞): to replace, to substitute
NOTE:
その代わり often introduces a condition or trade-off: "I'll help you, but in exchange..."