[單字] poisonous和toxic的分別？
以下是我在網站找到的這兩個字的差別：
summary:
1.Poisonous and toxic essentially refer to any substance or action
that will cause you or anything else harm. These terms are often
used interchangeably.
2.Toxic has a broader definition whereas poisonous usually refers to
only biological agents.
3.Poison has long been a weapon of choice for mankind while toxic
substances were only recently classed and regulated.
來源：http://www.differencebetween.net/science/
difference-between-toxic-and-poisonous/#ixzz3JRXNdTJq
以下為我的解讀
第一點說的重點是說大部分時候，這兩個字是可以通用的。
第二點toxoc較為廣義，但是poisonous是專指biological agents
(請問什麼)是biological agents?)
第三點poison早就被用來當作人類的武器，但是toxic最近最近才被
「歸類」並「規範」（？）
我應該是對這兩個字的定義優些誤解，
所以還是無法很確切及具體的說出兩者的差別
可否煩請版友解惑，謝謝
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