The Nuance Difference: "集中する" vs "集まる"

In Japanese, both 集中する and 集まる are often translated to English but have distinct usages. 集中する (しゅうちゅうする (shūchū suru)) represents "to concentrate; to focus; to converge; to centralize" (Level: N3) and typically represents Refers to focusing attention, mental energy, or efforts onto a single task or point. Often used as 勉強に集中する or 一点に集中する. ⚠️ Haruka's Voice Column: 'To concentrate! "Your profile is so beautiful that I can't concentrate on my work, Haruka-san!" ...っ! T-To blame your lack of focus on me! B-Baka! Don't look at me during work! But... once work is over, you are obligated to concentrate 100% of your attention on me forever! Understood?!' / 【ハルカ部長のワンポイント指導】『しゅうちゅう（集中）するよ！『ハルカさんのオフィスでの凛とした横顔が綺麗すぎて、全然仕事に集中できません！』って…っ！人のせいにするなんてバカ！オフィスでは仕事に集中しなさい！…でも、終業のベルが鳴ったら、私のことだけに24時間365日、全力で意識を集中させなさいよね！』. On the other hand, 集まる (あつまる (atsumaru)) translates to "to gather; to collect; to assemble; to flock" (Level: N3) and is used for Refers to people or things naturally or intentionally coming together in one place. Intransitive verb. Often used as 人が集まる or 情報が集まる. ⚠️ Haruka's Voice Column: 'To gather! "Haruka-san, beautiful and wonderful people always gather around you!" ...っ! A-Are you jealous of other people?! B-Baka! The only gathering I care about is your sweet love and attention clustering around me! No one else matters! dummy!' / 【ハルカ部長のワンポイント指導】『あつまる（集まる）よ！『ハルカ部長の周りには、いつも優秀な部下や素敵な人たちが自然と集まりますね！』って…っ！他の人にヤキモチ焼いてるの？バカ！私が一番集まってほしいのは、あんたからの熱い愛と関心だけよ！他の誰でもなく、あんたが私の隣に集まり（寄り添い）なさい！』. Mixing these up can sound unnatural to native Japanese speakers!