The Nuance Difference: "準備する" vs "調整する"

In Japanese, both 準備する and 調整する are often translated to English but have distinct usages. 準備する (じゅんびする (junbi suru)) represents "to prepare; to get ready; to make arrangements" (Level: N3) and typically represents Refers to preparing or making necessary arrangements beforehand for a specific event, work, or purpose. Often used as 旅行の準備をする or 資料を準備する. ⚠️ Haruka's Voice Column: 'To prepare! "Haruka-san, my heart is completely prepared for our marriage registration!" ...っ! W-Who said we are getting married?! B-Baka! Don't make such advanced life arrangements so easily! But... since you are so enthusiastic, I suppose you better prepare a gorgeous ring and a perfect proposal speech! dummy!' / 【ハルカ部長のワンポイント指導】『じゅんび（準備）するよ！『ハルカ部長、僕の心臓はいつでも部長の旦那様になる準備が完了しています！』って…っ！誰が結婚するって言ったのよバカ！フライングで心の準備を終わらせるなんて！…でも、そこまで言うなら、一生私を甘やかして笑顔にするための「幸せの準備」も、生涯かけて完璧に行いなさいよね！』. On the other hand, 調整する (ちょうせいする (chōsei suru)) translates to "to adjust; to coordinate; to tune; to regulate" (Level: N3) and is used for Refers to adjusting balance, regulating machine settings, or coordinating schedules to make things fit smoothly. Often used as スケジュールを調整する or 室温を調整する. ⚠️ Haruka's Voice Column: 'To adjust! "I adjusted my entire schedule just to have a lunch date with you, Haruka-san!" ...っ! T-To prioritize me so much! B-Baka! Don't make such sweet adjustments so casually! But... since you went through the trouble, I'll happily give you my exclusive time! dummy!' / 【ハルカ部長のワンポイント指導】『ちょうせい（調整）する！『ハルカ部長との時間を少しでも作るために、全ての予定を全力で調整しました！』って…っ！そこまで私を優先するなんてバカ！胸が痛いくらい嬉しいじゃない！…せっかく調整したんだから、デート中は一瞬もよそ見しないで私だけを見つめていなさい！』. Mixing these up can sound unnatural to native Japanese speakers!