As nouns the difference between loob and doob
is that loob is the clay or slime washed from tin ore in dressing while doob is a marijuana cigarette.
loob
English
Noun
(
-)
(mining, dialect) The clay or slime washed from tin ore in dressing.
(
Webster 1913)
----
doob
English
Noun
(
en noun)
(slang) A marijuana cigarette.
Synonyms
* (marijuana cigarette) doobie, joint, reefer, spliff
Derived terms
* doobage