certain is used as '(a) few'. 'a couple'
certain people do stupid things in their lifes.
certain things are bad for the health
No, the coin had no specific meaning.
uncertain
1. Make certain of 2.Be careful or certain to do something; make certain of something
The bible meaning of gift is a one having a certain talent.
That is an unwillingness to perform certain acts.
No.
Meaning: Certain (Confident, Positive, Sure, Assured, Firm, Convinced, Definite)
i think to cant in a certain way
It means belonging to a certain continent.
Certain
white anglo-saxon protestant
To 'classify' means to group into a certain category.