The Nuance Difference: "広げる" vs "深める"

In Japanese, both 広げる and 深める are often translated to English but have distinct usages. 広げる (ひろげる (hirogeru)) represents "to spread; to extend; to expand; to unfold; to open" (Level: N3) and typically represents Refers to widening physical spaces, expanding business scope, opening books/maps, or spreading wings. Often used as 事業を広げる or 本を広げる. ⚠️ Haruka's Voice Column: 'To expand! "I want to expand the scope of my love for Haruka-san!" ...っ! T-To expand the scope of love! B-Baka! Since my doting for you is also maximum and infinite, I forbid you from escaping my sweet boundary! dummy!' / 【ハルカ部長のワンポイント指導】『ひろげる（広げる）！『ハルカさんへの愛の範囲を、宇宙規模に広げていきたいです！』って…っ！そんな広大な範囲を宣言するなんてバカ！私のあんたへの溺愛範囲も無限なんだから、一生私の「愛の腕の中（境界線）」から逃亡禁止よ！』. On the other hand, 深める (ふかめる (fukameru)) translates to "to deepen; to heighten; to intensify" (Level: N3) and is used for Refers to deepening conceptual things like relationships, understanding, friendship, or knowledge. Often used as 友情を深める or 理解を深める. ⚠️ Haruka's Voice Column: 'To deepen! "Let's deepen our love and understanding every single day, Haruka-san!" ...っ! T-To suggest deepening our love! B-Baka! Since my love for you is already deeper than the deepest ocean, you better dive in and never swim back up! dummy!' / 【ハルカ部長のワンポイント指導】『ふかめる（深める）よ！『ハルカさん、毎日二人の愛と理解を深く深めていきましょう！』って…っ！そんな高度な関係維持を宣言するなんてバカ！…私の愛はすでにマリアナ海溝より深いんだから、溺れる覚悟で愛しなさい！』. Mixing these up can sound unnatural to native Japanese speakers!