notion和concept都是觀(guān)念的意思，但用法有什么區別？

concept 是 對事物整體或者本質(zhì)的感觀(guān)，印象與看法 +of
how sth. is / how sth. should be done.
EG：It's difficult to grasp the concept of infinite space.
notion 是 事物的總體印象 非常朦朧 尤其指一些你認為不對的事情的概念
EG：We're trying to dispel the notion that it's cool to smoke or drink.

notion，connotation和perception的區別

notion[英][?n???n][美][?no??n]
n.概念，觀(guān)念; 意見(jiàn)，見(jiàn)解; 奇想; 打算;
復數：notions

connotation[英][?k?n??te??n][美][?kɑ:n??te??n]
n.內涵，含義; 言外之意; [邏輯學(xué)]內涵;
復數：connotations

perception[英][p??sep?n][美][p?r?sep?n]
n.知覺(jué); 觀(guān)念; 覺(jué)察（力）; （農作物的）收獲;
復數：perceptions