"I enjoy shopping for clothes just as much as shopping for groceries."
"I enjoy clothes shopping as much as grocery shopping."
"I enjoy..." の代わりに "I like..." を使えます。
"I like clothes shopping as much as grocery shopping."
"clothes shopping" と "shopping for clothes" は同じ意味で、"grocery shopping" や他の買い物も同じように変えます。
"furniture" 「家具」"furniture shopping" と "shopping for furniture".
"shopping" 2種類を言うので何の"shopping"を必ず言い、1種類をいう時"shopping" は "clothes shopping" を表します。
買い物の代わりに他のする事を使えます。
"cooking" 「料理」"I enjoy cooking as much as shopping."
この例文で ”shopping" は上の説明の通り "clothes shipping" の事を表しています。