How to say "domestic" in Japanese

• 国内こくないCommon
  no-adjectiveCovers 'domestic' meaning 'within the country': domestic flights, the domestic market, domestic news. It locates something inside the country; it does not say anything about where a product was made.
  アメリカへ行いくくらいなら、国内こくないにいるほうがましだ。↗

  You might as well stay at home as go to America.
• 国産こくさんJLPT N1approx.Common
  no-adjectiveCovers 'domestic' as in domestically produced: domestic cars, domestic goods. It means made in Japan, so use it when 'domestic' describes a product's country of origin rather than location or events.
  しかし、国産こくさんワインといっても、国内こくないで瓶詰びんづめされたものは全すべて国産こくさんワインとなります。↗

  Having said 'domestic wine', anything bottled domestically is deemed to be domestic wine.
• 対内たいないCommon
  nounCovers 'domestic' meaning 'internal' — concerning what is inside the country, directed inward rather than toward foreign countries. Think of it as the 'internal' side of 'domestic'.
• 家庭内かていないCommon
  no-adjectiveCovers 'domestic' in the household sense: relating to home and family life, including the 'domestic' of 'domestic violence'. It is about the sphere of the home, not the country.
  テレビはしばしば家庭内かていないの意思いしの疎通そつうを妨さまたげるという事実じじつはすでによく知しられている。↗

  The fact that television frequently limits communication within families is already well known.

Choose by sense: 国内 for 'domestic' meaning within the country, 国産 for domestically made products, 対内 for the 'internal' sense contrasted with foreign, and 家庭内 for domestic life in the home or family.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• 国内こくないwithin the country
• 国産こくさんdomestically produced
• 対内たいないdomestic
• 家庭内かていないwithin the family
• ドメスティックdomestic
• ドメスdomestic
• 国内製こくないせいdomestic
• 国内的こくないてきinternal (to a country)
• 飼いかいdomesticated