No, it is not an noun. Depend is a verb. There are noun forms, dependence and dependent (person), which is also an adjective.
Dependence, dependency, or dependent (person). The adjective dependable also has the noun form dependability.
Yes dependence is the base word for co-dependence.
His dependence on his mother handicapped him in a relationship. She regretted her dependence upon his advice.
No, there is no physical dependence associated with LSD.
Having a drug dependence is an addiction.
The people dependence is on you not on the mayor.
Legg's Dependence was created in 1760.
The suffix of "dependence" is "-ence."
The Anatomy of Dependence was created in 1971.
The Anatomy of Dependence has 170 pages.
A program's system dependence graph (SDG) is a collection of procedure dependence graphs (PDGs): one for each procedure.