おばあさん・お祖母さん・お婆さんobaasan[2]nakadaka (mid-high)

1. noungrandmotherusu. お祖母さん when written with kanji
   ジョンのおばあさんは長ながい間ま病びょうに伏ふせていたが、亡なくなった。↗

   John's grandmother passed away after a long illness.
2. nounold woman; female senior citizenusu. お婆さん when written with kanji
   お祖母そぼさんが座布団ざぶとんの上うえにちんまりとすわっていました。↗

   The old woman was snugly sitting on a cushion.

• SynonymおばあちゃんCasualAn affectionate, colloquial form; the usual way for children to address their grandmother, and also used for old ladies in general.
• SynonymばあさんCasualMore casual than 「お祖母さん」; used within the family or for old women in general, but can come across as slightly disrespectful.
• Synonym祖母そぼWrittenThe standard word for your own grandmother when talking to outsiders, in speech or writing, as in 「祖母と住んでいる」; not used to address her directly.
• SynonymばあちゃんCasualAn affectionate form with the 「お」 dropped; more casual than 「お婆ちゃん」, with a homely or dialectal feel.
• RelatedおばあさまFormalA more respectful variant of 「お祖母さん」, used mostly for someone else's grandmother or in upper-class families.
• AntonymおじいさんNeutralThe neutral counterpart of 「お祖母さん」, meaning grandfather; for old men in general it is usually written 「お爺さん」.

Use 「お祖母さん」 as the default word for grandmother, and 「お婆さん」 for an old lady in general. Children affectionately say 「お婆ちゃん」; mention your own grandmother to others with 「祖母」; be respectful with 「おばあ様」.

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

1. 祖母そぼ。父方ちちかた、母方ははかたを区別くべつしない。
2. 祖母そぼに限かぎらず、祖先そせんのうちの女性じょせい。
3. 高齢こうれいの女性じょせい。