What's the difference between ladanum and laudanum?

Ladanum

Definition:

(n.) A gum resin gathered from certain Oriental species of Cistus. It has a pungent odor and is chiefly used in making plasters, and for fumigation.

Example Sentences:

Definition:

Example Sentences:

(1) Thomas Jefferson, though generally skeptical of the medical treatments of his day, turned to laudanum in his later years to help ease his chronic diarrhea – an affliction that probably helped kill him .
(2) In the mid-nineteenth century opium and its derivatives, such as laudanum and morphine, were the most common poisons in suicides in England and Wales.
(3) His friend Rosetti, his own wife Lizzie Siddal dead of a laudanum overdose, would seduce Janey and, though the marriage endured, the early simple happiness was gone.
(4) Burne Jones's month old son died of scarlet fever, which almost killed his mother, and Siddall died of an overdose of laudanum.
(5) Like other opiates, laudanum is derived from the opium poppy (the “ joy plant ” as the Sumerians called it 5,000 years ago).
(6) "If the 'war on drugs' means stopping every street corner turning into an opium den and discouraging the mass consumption of laudanum, as was the case in the 19th century, then it has succeeded.
(7) Well, if the war on drugs means stopping every street corner turning into an opium den and discouraging the mass consumption of laudanum – as happened during the 19th century – then it has succeeded.
(8) He felt so much better on the drug that he wrote to a friend , “with care and laudanum I may consider myself in what is to be my habitual state.” Jefferson’s use of the word “habitual” is telling.