それに・其れにsoreni

1. conjunctionbesides; in addition; also; moreover
   それに、みんなに仲間なかまもできるしね。↗

   And, we get each other's company to boot.

• Synonymその上そのうえNeutralAdds one thing on top of another, as in 「その上値段も安い」. A touch more formal than 「それに」, and can stack points one after another.
• SynonymなおかつWrittenA written-style word meaning 'and what's more', as in 「安く、なおかつ美味しい」; it stresses that both qualities hold, and can also mean 'even so'.
• SynonymさらにNeutralMeans 'to go a step further', as in 「さらに問題がある」. Common in both speech and writing; it stresses rising degree or piling on more.
• SynonymかつWrittenWritten-style: 'and, at the same time', as in 「必要かつ十分」. It links parallel conditions and leans formal.
• Synonym加えてくわえてWrittenWritten language: 'in addition', as in 「加えて雨も降った」. Mostly found in prose and rarely said in conversation.
• RelatedまたNeutralMeans 'also, another', as in 「また次の点も」. Very common in speech and writing with a wide range of uses; its additive nuance is lighter than 「それに」.
• Relatedかてて加えてかててくわえてWrittenWritten and old-fashioned: 'what's more', piling one bad thing on another, so it usually follows negatives. In daily speech say 「それに」 or 「おまけに」.
• RelatedなおまたFormalA formal, stately way to add a point, used in writing or formal speech. Stiffer than 「それに」 and rarely heard in casual chat.

Default to 「それに」 for 'and, besides'. Use 「その上」 when you want it slightly more formal, 「さらに」 for stepping up or adding more, 「加えて」 in prose, and 「なおかつ」 or 「かつ」 for 'both A and B'.

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

1. 且かつ。
2. それなのに
3. それにより