chili一般特指紅辣椒。
pepper用來指胡椒粉，而不是辣椒。 capsicum是辣椒的學名，一般用於較為正式的研究報告中。
cayenne用來泛指辣椒這一品種。 辣椒，又叫牛角椒、長辣椒、番椒、番姜、海椒、辣子、辣角、秦椒等，是一種茄科辣椒屬植物。
原產於中南美洲熱帶地區。 辣椒的果實通常呈圓錐形或長圓形，未成熟時呈綠色，成熟後變成鮮紅色、黃色或紫色，以紅色最為常見。
擴展資料辣椒的起源 1492年，哥倫布大航海發現了新大陸，也帶回了辣椒——這是辣椒從原產地走向世界的一步。在之後的時間裏，辣椒在歐洲開始小範圍的傳播，並逐漸通過海路來到中國，在東部沿海落腳。
我國最早關於辣椒的記載是明代高濂的《遵生八箋》（1591年）：“番椒叢生，白花，果儼似禿筆頭，味辣色紅，甚可觀。”（番椒生長的很茂密，花是白色的，果實好像禿筆頭，味辣色紅，甚是好看）。
所以説，辣椒是在明末傳入中國的。 參考資料：百度百科-辣椒-相關歷史。
2. 英語中辣椒都有哪幾種表示方法最通用的説法就是 pepper
他的第一含義是胡椒，但是外國人（至少是在中國的外教）大都用這個詞表示我們意義上的辣椒：
比如bell pepper就是我們所説的不辣的柿子椒（ 甜椒）
而red pepper就是紅辣椒
此外，其他辣椒的説法是代表不同種類的亞種或分類
比如：
1. cayenne n.牛角椒
2. capsicum n. 辣椒屬（植物）
3. pimiento n. 大椒 （柿子椒的學名）
3. 辣椒的用處（用英語寫）Chili peppers (genus Capsicum) can be eaten fresh or dried, raw or cooked, alone or mixed with other foods. They add zest to any food—meat, poultry, seafood, starch, vegetable, fruit—whether eaten by themselves or as an ingredient in a prepared dish. Peppers are the most popular spice and condiment in the world. They are consumed daily by one-quarter of the world's population, and the rate of consumption is growing. Nonpungent or sweet peppers are also consumed as a vegetable, but are the less popular spice. All capsicums were pungent before being domesticated by prehistoric New World peoples and before the breeding of non-pungent (sweet) types. Peppers, both pungent and non-pungent, are the fruit of perennial shrubs that were unknown outside the tropical and subtropical regions of the Western Hemisphere before 1493, when Christopher Columbus returned from the first of his voyages in search of a western route to the East Indies. Although he did not reach those exotic spice lands as he had proposed, his return to Spain with examples of a new pungent spice discovered during his first voyage to the eastern coast of the Caribbean island of Española (Dominican Republic and Republic of Haiti) is well documented in his journal. Today capsicums are not only consumed as a spice, condiment, and vegetable; they also have many other uses—as coloring agents, in landscape design, as ornamental objects, in decorative design—and have great potential in the field of medicine.。
